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 A330031 #22 Mar 09 2020 22:10:49 %S A330031 2,5,8,11,14,20,21,24,30,36,39,40,45,55,57,60,66,70,76,85,88,91,94, %T A330031 104,112,119,121,124,130,140,155,166,168,169,175,176,185,200,204,221, %U A330031 224,230,240,249,255,276,285,287,290,296,304,306,321,330,340,342,365 %N A330031 Sums of two nonzero tetrahedral numbers (A000292). %H A330031 Peter Kagey, <a href="/A330031/b330031.txt">Table of n, a(n) for n = 1..10000</a> %Y A330031 Cf. A000292, A102798, A104246. %Y A330031 Analogs for other figurate numbers are A000404 (squares), A003325 (cubes), A051533 (triangular numbers), A286636 (centered square numbers), A287960 (centered triangular numbers), A288631 (square pyramidal numbers), A332987 (pentagonal numbers). %K A330031 nonn %O A330031 1,1 %A A330031 _Peter Kagey_, Mar 07 2020