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 A243481 #7 Feb 09 2015 10:34:20
%S A243481 17,6867,710088,38504985,1409180462,39390143719,903369758170,
%T A243481 17794252503829,310620860769359,4914610198933595,71670394607559276,
%U A243481 975829774811610622,12530984703191609205,153000363388748917171,1787972768823076763190,20107368357857569858580
%N A243481 Number of isoscent sequences of length n with exactly eight descents.
%H A243481 Joerg Arndt and Alois P. Heinz, <a href="/A243481/b243481.txt">Table of n, a(n) for n = 14..100</a>
%t A243481 b[n_, i_, t_] := b[n, i, t] = If[n < 1, 1, Expand[Sum[ If[j < i, x, 1] *b[n - 1, j, t + If[j == i, 1, 0]], {j, 0, t + 1}]]]; a[n_] := Coefficient[b[n - 1, 0, 0], x, 8]; Table[a[n], {n, 14, 40}] (* _Jean-François Alcover_, Feb 09 2015, after A242352 *)
%Y A243481 Column k=8 of A242352.
%K A243481 nonn
%O A243481 14,1
%A A243481 _Joerg Arndt_ and _Alois P. Heinz_, Jun 05 2014