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 A181117 #2 Mar 30 2012 18:53:10 %S A181117 1,2,1,2,0,1,8,2,0,1,2,0,0,0,1,4,2,2,0,0,1,2,0,0,0,0,0,1,16,8,0,2,0,0, %T A181117 0,1,8,0,2,0,0,0,0,0,1,4,2,0,0,2,0,0,0,0,1,2,0,0,0,0,0,0,0,0,0,1,16,4, %U A181117 8,2,0,2,0,0,0,0,0,1,2,0,0,0,0,0,0,0,0,0,0,0,1,4,2,0,0,0,0,2,0,0,0,0,0,0,1 %N A181117 Triangle T(n,k) read by rows. T(n,k) = A046644(A126988). %C A181117 Denominator in fraction A181116/A181117. %e A181117 Triangle starts: %e A181117 1, %e A181117 2,1, %e A181117 2,0,1, %e A181117 8,2,0,1, %e A181117 2,0,0,0,1, %e A181117 4,2,2,0,0,1, %e A181117 2,0,0,0,0,0,1, %e A181117 16,8,0,2,0,0,0,1, %e A181117 8,0,2,0,0,0,0,0,1, %e A181117 4,2,0,0,2,0,0,0,0,1, %e A181117 2,0,0,0,0,0,0,0,0,0,1, %e A181117 16,4,8,2,0,2,0,0,0,0,0,1, %e A181117 2,0,0,0,0,0,0,0,0,0,0,0,1, %e A181117 4,2,0,0,0,0,2,0,0,0,0,0,0,1, %e A181117 4,0,2,0,2,0,0,0,0,0,0,0,0,0,1, %Y A181117 Cf. A181116, A046644, A051731. %K A181117 nonn,tabl %O A181117 1,2 %A A181117 _Mats Granvik_, Oct 04 2010