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 A338484 #5 Feb 16 2025 08:34:00 %S A338484 1,2,3,4,1,2,3,4,5,2,3,4,1,2,3,4,5,2,3,4,5,6,3,4,1,2,3,4,5,2,3,4,5,6, %T A338484 3,4,5,2,3,4,1,2,3,4,5,2,3,4,5,2,3,4,5,2,3,4,5,6,3,4,1,2,3,4,5,2,3,4, %U A338484 5,6,3,4,5,2,3,4,5,6,3,4,5,2,3,4,1,2,3,4,5,2,3,4,5,6,3,4,5,2,3,4,5 %N A338484 Least number of centered square numbers needed to represent n. %H A338484 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/CenteredSquareNumber.html">Centered Square Number</a> %H A338484 <a href="/index/Ce#CENTRALCUBE">Index entries for sequences related to centered polygonal numbers</a> %Y A338484 Cf. A001844, A002828, A101412, A234533, A338482. %K A338484 nonn %O A338484 1,2 %A A338484 _Ilya Gutkovskiy_, Oct 30 2020