Problem 55705. AZPC Oddly Triangular: N=10/11/13/14 Digits 3/7/9 Part 3 of 5

AZPC created the Oddly Triangular contest on 9/7/22. The challenge is to find the longest sequence of N odd digits such that sum(1:value) is composed of only odd digits. The contest ended on 9/8/22 as Rokicki created a 3.6 million digit solution with the implication that an infinite length pattern had been determined. [N=2, 17, sum(1:17)=153]
This is step three of the steps and processing types to find Rokicki's result.
This challenge is to find a solution subset with lengths 10, 11, 13, and 14 that only use the digits 3/7/9 in M and begin with 339 (10/11), 3399(13), and 33999(14). The sum(1:M(i)) may only use odd digits. Normal double variables will not suffice for N>8 solutions as the eps is >1 for the sums.
Usage of matlab java math can be seen in the Test Suite. A function zcombvec is given in the function template to facilitate creation of all vectors that only use the 3/7/9 digits. Usage of zcombvec is not required.
M=OddlyTri339_379(N,Q) where N=digit length, Q=number of solutions, M is a double vector of the Q values.

Solution Stats

100.0% Correct | 0.0% Incorrect
Last Solution submitted on Sep 26, 2022

Solution Comments

Show comments

Problem Recent Solvers5

Suggested Problems

More from this Author308

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!