A113351 Column 1 of triangle A113350, also equals column 0 of A113340^4.

1, 4, 22, 166, 1671, 21510, 341463, 6496923, 144856710, 3716746006, 108133664181, 3523951953981, 127331488458476, 5057405619797317, 219179491109978660, 10298771194610350427, 521765883689616772731, 28363341834962918344084

Offset: 0

Author

Paul D. Hanna, Nov 08 2005

Keywords

• nonn

Crossrefs

Cf. A113340, A113350, A113346 (column 0), A113352 (column 2), A113353 (column 3), A113354 (column 4).

Programs

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^4)[n+1,1]