This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A050942 #12 Dec 23 2017 09:11:50 %S A050942 1,2,3,5,6,7,8,11,12,13,14,15,17,18,21,22,23,24,26,27,28,29,30,32,33, %T A050942 37,38,39,40,41,42,43,44,45,47,48,50,51,53,54,57,58,59,60,61,62,63,65, %U A050942 66,67,68,69,70,71,72,73,75,76,77,78,79,82,86,87,88 %N A050942 Numbers that are not the sum of 2 or more consecutive nonzero triangular numbers. %C A050942 In other words, numbers that are not the difference of two non-adjacent tetrahedral numbers (A000292). - _Ivan Neretin_, Dec 20 2017 %H A050942 Chai Wah Wu, <a href="/A050942/b050942.txt">Table of n, a(n) for n = 1..10000</a> %Y A050942 Cf. A050943. %K A050942 nonn %O A050942 1,2 %A A050942 _N. J. A. Sloane_, Jan 02 2000