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 A000437 #13 Feb 01 2022 00:56:21 %S A000437 0,9,41,81,146,194,306,369,425,594,689,866,1109,1161,1154,1361,1634, %T A000437 1781,1889,2141,2729,2609,3626,3366,3566,3449,3506,4241,4289,4826, %U A000437 5066,5381,7034,5561,6254,7229,7829,8186,8069,8126,8609,8921,8774 %N A000437 Smallest nonnegative number that is the sum of 3 squares in exactly n ways. %C A000437 Note that a square can be zero. %H A000437 <a href="/index/Su#ssq">Index entries for sequences related to sums of squares</a> %Y A000437 Apart from initial term, same as A095809. %K A000437 nonn %O A000437 1,2 %A A000437 _N. J. A. Sloane_