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 A176358 #16 Sep 01 2025 03:04:08
%S A176358 5,19,46,87,131,196,272,362,471,596,735,887,1042,1211,1397,1586,1789,
%T A176358 1997,2206,2425,2652,2882,3119,3384,3659,3957,4264,4575,4889,5210,
%U A176358 5534,5863,6207,6584,6997,7416,7844,8278,8717,9158,9607,10065,10524,10991
%N A176358 Partial sums of A002503.
%F A176358 a(n) = Sum_{i=1..n} A002503(i).
%e A176358 a(4) = 5 + 14 + 27 + 41 = 87.
%t A176358 Accumulate[Select[Range[800],Divisible[Binomial[2#,#],(#+1)^2]&]] (* _Harvey P. Dale_, Apr 18 2011 *)
%Y A176358 Cf. A002503.
%K A176358 easy,nonn,changed
%O A176358 1,1
%A A176358 _Jonathan Vos Post_, Apr 15 2010
%E A176358 Corrected by _Harvey P. Dale_, Apr 18 2011