%N Numbers that are not the sum of 2 or more consecutive nonzero triangular numbers.
%C In other words, numbers that are not the difference of two non-adjacent tetrahedral numbers (A000292). - _Ivan Neretin_, Dec 20 2017
%H Chai Wah Wu, <a href="/A050942/b050942.txt">Table of n, a(n) for n = 1..10000</a>
%Y Cf. A050943.
%A _N. J. A. Sloane_, Jan 02 2000