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 A261797 #7 Sep 01 2015 16:26:16
%S A261797 1,1,2,2,4,4,6,7,11,12,16,19,25,29,37,43,55,63,78,90,110,127,153,176,
%T A261797 211,242,286,328,386,441,515,586,682,775,895,1016,1169,1323,1514,1711,
%U A261797 1953,2201,2502,2815,3191,3582,4048,4536,5113,5719,6429,7179,8052
%N A261797 Expansion of Product_{k>=1} (1-x^(3*k))*(1-x^(5*k))/(1-x^k).
%H A261797 Vaclav Kotesovec, <a href="/A261797/b261797.txt">Table of n, a(n) for n = 0..10000</a>
%F A261797 a(n) ~ exp(Pi*sqrt(14*n/5)/3) / sqrt(30*n).
%t A261797 nmax=80; CoefficientList[Series[Product[(1-x^(3*k))*(1-x^(5*k))/(1-x^k), {k, 1, nmax}], {x, 0, nmax}], x]
%Y A261797 Cf. A103257, A098151, A138526, A261796.
%K A261797 nonn
%O A261797 0,3
%A A261797 _Vaclav Kotesovec_, Sep 01 2015