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 A276286 #11 Feb 16 2025 08:33:36
%S A276286 1,28,364,2912,16044,64792,200928,503360,1089452,2186940,4196920,
%T A276286 7544992,12547808,19975256,31553344,48484800,70439852,99602104,
%U A276286 142487436,200569824,268594872,354052608,476105504,630908096,800698080,1008274932,1296257144
%N A276286 Number of ways of writing n as a sum of 14 squares.
%H A276286 Seiichi Manyama, <a href="/A276286/b276286.txt">Table of n, a(n) for n = 0..10000</a>
%H A276286 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/SumofSquaresFunction.html">Sum of Squares Function</a>
%H A276286 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/JacobiThetaFunctions.html">Jacobi Theta Functions</a>
%H A276286 <a href="/index/Su#ssq">Index entries for sequences related to sums of squares</a>
%F A276286 G.f.: theta_3(0,q)^14, where theta_3(x,q) is the third Jacobi theta function.
%t A276286 Table[SquaresR[14, n], {n, 0, 26}]
%Y A276286 Cf. similar sequences of number of ways of writing n as a sum of k squares listed in A276285.
%Y A276286 14th column of A286815.
%K A276286 nonn
%O A276286 0,2
%A A276286 _Ilya Gutkovskiy_, Aug 27 2016