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 A223518 #5 Mar 23 2013 14:58:40 %S A223518 1,16,1,496,48,1,22816,2752,96,1,1391776,193440,8800,160,1,105774976, %T A223518 16286656,879840,21440,240,1,9625522816,1604147328,98111776,2895200, %U A223518 44240,336,1,1020305418496,181269286912,12200219136,413688576,7761600,81536,448,1 %N A223518 Triangle T(n,k) represents the coefficients of (x^16*d/dx)^n, where n=1,2,3,...; generalization of Stirling numbers of second kind A008277, Lah-numbers A008297. %e A223518 1; %e A223518 16,1; %e A223518 496,48,1; %e A223518 22816,2752,96,1; %e A223518 1391776,193440,8800,160,1; %e A223518 105774976,16286656,879840,21440,240,1; %e A223518 9625522816,1604147328,98111776,2895200,44240,336,1; %e A223518 1020305418496,181269286912,12200219136,413688576,7761600,81536,448,1 %p A223518 b[0]:=f(x): %p A223518 for j from 1 to 10 do %p A223518 b[j]:=simplify(x^16*diff(b[j-1],x$1); %p A223518 end do; %Y A223518 Cf. A008277, A019538, A035342, A035469, A049029, A049385, A092082, A132056, A223511-A223522, A223168-A223172, A223523-A223532. %K A223518 nonn,easy,tabl %O A223518 1,2 %A A223518 _Udita Katugampola_, Mar 23 2013