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 A097787 #6 Jun 13 2015 00:51:30
%S A097787 1,8,39,152,526,1704,5322,16296,49383,148864,447593,1344144,4034252,
%T A097787 12105136,36318468,108959280,326882685,980654040,2941969435,
%U A097787 8825917160,26477762106,79433298968,238299911854,714899753112,2144699279811
%N A097787 a(n)=3a(n-1)+C(n+4,4),n>0, a(0)=1.
%C A097787 Partial sums of A097786.
%H A097787 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (8,-25,40,-35,16,-3).
%F A097787 G.f. : 1/((1-3x)(1-x)^5);
%F A097787 a(n)=3^(n+5)/32-(2n^4+32n^3+196n^2+556n+633)/96;
%F A097787 a(n)=sum{k=0..n, binomial(n+5, k+5)2^k}.
%K A097787 easy,nonn
%O A097787 0,2
%A A097787 _Paul Barry_, Aug 24 2004