A136171 Column 0 of triangle A136170.

1, 1, 3, 19, 310, 10978, 868140, 149688297, 57339888914, 49349265481439, 97121874114574056, 443452539940740460176, 4761916627762078978228971, 121633155493441873035613043864, 7462643123890754031039350760255218

Offset

0,3

Links

Table of n, a(n) for n=0..14.

Prog

(PARI) /* Generate using matrix power method: */ a(n)=local(A=Mat(1), B); for(m=1, n+1, B=matrix(m, m); for(i=1, m, for(j=1, i, if(j==i, B[i, j]=1, B[i, j]=(A^(fibonacci(i-1)))[i-1, j]); )); A=B); return( ((A)[n+1, 1]))
(PARI) /* Generate using partial sums method: */ a(n)=local(A=vector(n+1), p); A[1]=1; for(j=1, n, p=fibonacci(n+2)-fibonacci(n-j+2)-j; A=Vec((Polrev(A)+x*O(x^p))/(1-x))); A[ #A]

Crossrefs

Cf. A136170, A136172, A136173.

Sequence in context: A143597 A224681 A115705 * A102586 A326902 A346840

Adjacent sequences: A136168 A136169 A136170 * A136172 A136173 A136174

Keyword

nonn

Author

Paul D. Hanna, Dec 17 2007

Status

approved