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 A368072 #8 Feb 16 2025 08:34:06 %S A368072 0,0,1,0,0,1,0,0,1,1,0,0,0,0,1,1,0,0,1,0,1,0,0,0,1,0,0,1,0,0,1,0,0,1, %T A368072 0,2,0,0,0,0,0,0,0,0,1,1,0,0,1,0,0,1,0,0,2,0,0,0,0,0,0,0,0,2,0,1,0,0, %U A368072 0,0,0,0,0,1,0,0,0,1,0,1,1,0,1,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,2 %N A368072 Number of representations of n as the difference of two positive tetrahedral numbers. %H A368072 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TetrahedralNumber.html">Tetrahedral Number</a> %e A368072 a(36) = 2: 36 = 56 - 20 = 120 - 84. %Y A368072 Cf. A000292, A136107, A307666, A368073, A368076. %K A368072 nonn %O A368072 1,36 %A A368072 _Ilya Gutkovskiy_, Dec 10 2023