# Problems

1 – 50 of 58
 Problem Title Likes Solvers Difficulty

#### Problem 44225. Sum of self power series

Created by: MathReallyWorks

2

74

#### Problem 57422. Harmonic series counting

Created by: Roie Knaanie

Tags math, sequences

0

29

#### Problem 55195. Sequence

Created by: Philena

Tags sequences

1

27

#### Problem 54675. Define an arithmetic sequence

Created by: Ashley Barnes

1

24

Created by: G K

2

53

#### Problem 1893. GJam 2014 China Rd A: Library Sorting (Small)

Created by: Richard Zapor

1

25

#### Problem 42581. Create sequnce 1 4 9 16 25.........

Created by: Azhar

4

297

Created by: HH

3

26

Created by: G K

3

23

#### Problem 56260. Leonardo primes

Created by: Lenka Hanakova

3

19

#### Problem 566. Sum of first n terms of a harmonic progression

Created by: Srivardhini

3

405

Created by: JD

1

21

#### Problem 2736. Pernicious Anniversary Problem

Created by: Jan Orwat

12

816

#### Problem 1132. Create a recurrence matrix for a vector of data

Created by: Alex Feinman

Tags sequences

2

21

#### Problem 52594. Easy Sequences 10: Sum of Cumsums of Fibonacci Sequence

Created by: Ramon Villamangca

2

28

#### Problem 46624. List the emirps

Created by: ChrisR

2

40

#### Problem 1894. GJam 2014 China Rd A: Library Sorting (Large)

Created by: Richard Zapor

1

19

#### Problem 44466. The twelve days of Christmas

Created by: David Verrelli

1

60

#### Problem 44523. Pattern Sum

Created by: Dishant Varshney

2

211

#### Problem 46615. Find terms in the Connell sequence

Created by: ChrisR

Tags sequences

2

29

Created by: HH

Tags sequences

2

26

#### Problem 52462. Easy Sequences 1: Find the index of an element

Created by: Ramon Villamangca

1

42

#### Problem 46676. List the erauqs

Created by: ChrisR

1

23

#### Problem 2329. Finding the next number in a number list, are you able to crack it!

Created by: Chris E.

1

15

#### Problem 53004. Collect a set of candy wrappers

Created by: ChrisR

1

3

#### Problem 52584. Easy Sequences 9: Faithful Pairs

Created by: Ramon Villamangca

1

16

#### Problem 44628. The other half of the Fibonacci sequence

Created by: David Verrelli

2

16

#### Problem 12. Fibonacci sequence

Created by: Cody Team

102

13119

#### Problem 52654. Easy Sequences 13: Average Speed of Spaceship

Created by: Ramon Villamangca

1

13

#### Problem 594. "Look and say" sequence

Created by: Alex Feinman

2

201

#### Problem 52497. Easy Sequences 3: Prime 44-number Squares

Created by: Ramon Villamangca

1

23

#### Problem 47833. List the delete-a-digit primes

Created by: ChrisR

3

18

#### Problem 1696. Morse Code Generator! Try it!

Created by: Chris E.

2

76

Created by: HH

2

7

#### Problem 52689. Easy Sequences 18: Set Bits of Triple Summations

Created by: Ramon Villamangca

2

7

#### Problem 1779. Oh Zero Zero Zero!!!

Created by: Chris E.

13

381

Created by: HH

2

16

Created by: CXD

Tags sequences

0

5

#### Problem 57730. Easy Sequences 97: One-line Code Challenge - Sequence with Constant Difference

Created by: Ramon Villamangca

0

1

#### Problem 54. Maximum running product for a string of numbers

Created by: Cody Team

8

2133

#### Problem 49803. Compute expulsions from the Kimberling shuffle

Created by: ChrisR

Tags sequences

1

9

#### Problem 2640. Find similar sequences

Created by: Guillaume

Tags sequences

1

100

#### Problem 56220. Easy Sequences 75: Easy as Pisano Pi

Created by: Ramon Villamangca

1

9

#### Problem 51282. Compute a row of the Kimberling shuffle

Created by: ChrisR

Tags sequences

1

9

#### Problem 52562. Easy Sequences 6: Coefficient sums of derivatives

Created by: Ramon Villamangca

1

13

#### Problem 52532. Easy Sequences 5: Project Euler Problem 1 - Again!

Created by: Ramon Villamangca

2

12

#### Problem 52574. Easy Sequences 8: Triangles with integer sides and prime perimeters

Created by: Ramon Villamangca

1

8

#### Problem 52609. Easy Sequences 11: Factorial Digits without Trailing Zeros

Created by: Ramon Villamangca

1

14

#### Problem 8057. (Linear) Recurrence Equations - Generalised Fibonacci-like sequences

Created by: Jan Orwat

16

306

#### Problem 317. Find the stride of the longest skip sequence

Created by: Ned Gulley

Tags sequences

9

148

1 – 50 of 58