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 A322611 #10 Feb 16 2025 08:33:57
%S A322611 1,5,6,13,18,19,25,38,41,43,44,61,66,79,84,85,102,113,127,140,145,146,
%T A322611 181,187,198,212,221,225,230,231,258,259,265,300,313,325,326,338,343,
%U A322611 344,365,402,404,421,439,445,470,481,483,486,488,489,524,545,547,578,585,613,626,651,660
%N A322611 Numbers that are sums (of a nonempty sequence) of consecutive centered square numbers.
%H A322611 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/CenteredSquareNumber.html">Centered Square Number</a>
%t A322611 anmax = 1000; nmax = Floor[Sqrt[anmax/2]] + 1; Select[Union[Flatten[Table[Sum[k^2 + (k + 1)^2, {k, i, j}], {i, 0, nmax}, {j, i, nmax}]]], # <= anmax &] (* _Vaclav Kotesovec_, Dec 21 2018 *)
%Y A322611 Cf. A001844, A005900, A034705, A320728, A322479, A322610, A322638, A322640.
%K A322611 nonn
%O A322611 1,2
%A A322611 _Ilya Gutkovskiy_, Dec 20 2018