Prove that there are an infinite number of distinct ordered pairs (m, n) of integers such that, for every positive integer t, the number mt + n is a triangular number if and only if t is a triangular number as well

(In reply to What's this? by Tristan)

Petitioning the director does work! The problem statement has been corrected. Maybe somebody will notice.

Posted by Richard on 2004-11-01 16:59:10