A113373 Column 3 of triangle A113370, also equals column 0 of A113370^10.

1, 10, 190, 4945, 163705, 6617605, 317416204, 17677189426, 1123660618048, 80411135580587, 6405386721320372, 562632770359355432, 54061761393693393203, 5643864294810397451552, 636388356169482970183598

Offset: 0

Author

Paul D. Hanna, Nov 13 2005

Keywords

• nonn

Comments

Column k of A113370 = column 0 of A113370^(3*k+1) for k>=0.

Crossrefs

Cf. A113370, A113371 (column 1), A113372 (column 2).

Programs

PARI

a(n)=local(A,B);A=Mat(1);for(m=2,n+4,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^(3*j-2))[i-j+1,1]));));A=B);A[n+4,4]