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 A329236 #40 Feb 16 2025 08:33:58 %S A329236 1,64,1789760 %N A329236 a(n) is the least integer that can be expressed as the sum of one or more consecutive centered triangular numbers in exactly n ways. %C A329236 If it exists, a(4) > 10^18. - _Bert Dobbelaere_, Apr 17 2020 %H A329236 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/CenteredTriangularNumber.html">Centered Triangular Number</a> %Y A329236 Cf. A005448, A054859, A068314, A298467, A322610, A334007. %K A329236 nonn,hard,more %O A329236 1,2 %A A329236 _Ilya Gutkovskiy_, Apr 13 2020