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 A113354 #5 Jun 13 2017 22:51:29 %S A113354 1,10,145,2575,53935,1305070,35924902,1111107544,38212134595, %T A113354 1448428857802,60055380515614,2705916453572344,131733359512179916, %U A113354 6894586916062176161,386203389346756538342,23061963945353367894173 %N A113354 Column 4 of triangle A113350, also equals column 0 of A113340^10. %o A113354 (PARI) a(n)=local(A,B);A=matrix(1,1);A[1,1]=1;for(m=2,n+1,B=matrix(m,m); for(i=1,m, for(j=1,i,if(i<3 || j==i || j>m-1,B[i,j]=1,if(j==1, B[i,1]=1,B[i,j]=(A^(2*j-1))[i-j+1,1]));));A=B);(A^10)[n+1,1] %Y A113354 Cf. A113340, A113350, A113346 (column 0), A113351 (column 1), A113352 (column 2), A113353 (column 3). %K A113354 nonn %O A113354 0,2 %A A113354 _Paul D. Hanna_, Nov 08 2005