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 A035369 #8 Aug 27 2015 05:54:41
%S A035369 0,0,1,0,1,1,0,2,1,2,2,1,4,2,4,5,2,8,5,7,10,5,14,11,12,19,11,24,21,22,
%T A035369 33,22,41,38,37,58,40,67,68,63,95,73,108,114,105,155,124,173,188,171,
%U A035369 246,208,270,303,274,385,338,418,477,435,590,539,640,738,676,898,840
%N A035369 Number of partitions of n into parts 5k or 5k+3.
%F A035369 a(n) ~ exp(2*Pi*sqrt(n/15)) * 5^(1/20) * Gamma(3/5) / (4 * 3^(11/20) * Pi^(2/5) * n^(21/20)). - _Vaclav Kotesovec_, Aug 27 2015
%t A035369 nmax = 100; Rest[CoefficientList[Series[Product[1/((1 - x^(5k+5))*(1 - x^(5k+3))), {k, 0, nmax}], {x, 0, nmax}], x]] (* _Vaclav Kotesovec_, Aug 27 2015 *)
%K A035369 nonn
%O A035369 1,8
%A A035369 _Olivier Gérard_