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 A223513 #10 Apr 23 2018 19:09:31 %S A223513 1,11,1,231,33,1,7161,1287,66,1,293601,61215,4125,110,1,14973651, %T A223513 3476781,279840,10065,165,1,913392711,230534073,21106701,924000,20790, %U A223513 231,1,64850882481,17511845967,1771323246,89482701,2483250,38346,308,1 %N A223513 Triangle T(n,k) represents the coefficients of (x^11*d/dx)^n, where n=1,2,3,... %C A223513 Generalization of Stirling numbers of second kind A008277, Lah-numbers A008297. %e A223513 1; %e A223513 11,1; %e A223513 231,33,1; %e A223513 7161,1287,66,1; %e A223513 293601,61215,4125,110,1; %e A223513 14973651,3476781,279840,10065,165,1; %e A223513 913392711,230534073,21106701,924000,20790,23,1; %e A223513 64850882481,17511845967,1771323246,89482701,2483250,38346,308,1; %p A223513 b[0]:=f(x): %p A223513 for j from 1 to 10 do %p A223513 b[j]:=simplify(x^11*diff(b[j-1],x$1); %p A223513 end do; %Y A223513 Cf. A008277, A019538, A035342, A035469, A049029, A049385, A092082, A132056, A223511-A223522, A223168-A223172, A223523-A223532. %K A223513 nonn,easy,tabl %O A223513 1,2 %A A223513 _Udita Katugampola_, Mar 23 2013