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 A173677 #20 Nov 10 2023 12:26:26
%S A173677 1,2,1,0,0,0,0,0,2,2,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,2,2,0,0,0,0,0,
%T A173677 0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,2,2,0,0,
%U A173677 0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2
%N A173677 Number of ways of writing n as a sum of two nonnegative cubes.
%C A173677 Order matters. This is the coefficient of q^n in the expansion of {Sum_{m>=0} q^(m^3)}^2.
%H A173677 Seiichi Manyama, <a href="/A173677/b173677.txt">Table of n, a(n) for n = 0..10000</a>
%F A173677 a(n) = Sum_{k=0..n} c(k) * c(n-k), where c = A010057. - _Wesley Ivan Hurt_, Nov 09 2023
%o A173677 (PARI) list(n)=my(q='q);Vec(sum(m=0,(n+.5)^(1/3),q^(m^3),O(q^(n+1)))^2) \\ _Charles R Greathouse IV_, Jun 07 2012
%Y A173677 Cf. A004829, A008451, A010057, A051343, A173676.
%Y A173677 Sums of k cubes, number of ways of writing n as, for k=1..9: A010057, A173677, A051343, A173678, A173679, A173680, A173676, A173681, A173682.
%K A173677 nonn,easy
%O A173677 0,2
%A A173677 _N. J. A. Sloane_, Nov 24 2010