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 A132865 #14 Jan 26 2020 21:04:36
%S A132865 1,5,55,785,12775,224945,4174135,80404385,1592666695,32238859025,
%T A132865 663961262935,13868665189505,293105002282855,6256280361209585,
%U A132865 134676678504352375,2920490688138377825,63738849200291875975,1398964964239496726225,30859472167442041607575
%N A132865 Expansion of 1/(1-5x*c(6x)), where c(x) is the g.f. of A000108.
%F A132865 a(n) = Sum_{k=0..n} A039599(n,k)*(-1)^k*6^(n-k). - _Philippe Deléham_, Dec 11 2007
%F A132865 G.f.: 12/(7 + 5*sqrt(1-24x)). - _Philippe Deléham_, Oct 27 2011
%t A132865 CoefficientList[Series[12/(7+5Sqrt[1-24x]),{x,0,20}],x] (* _Harvey P. Dale_, Sep 26 2017 *)
%K A132865 nonn
%O A132865 0,2
%A A132865 _Philippe Deléham_, Nov 18 2007
%E A132865 More terms from _Philippe Deléham_, Oct 27 2011