A107673 a(n) = A107672(n)/(n+1)^3.

1, 1, 19, 1279, 190769, 50664371, 21139541089, 12783260017161, 10590309839157381, 11531675416606553251, 15987041289872773372042, 27515661456632011548886402, 57600689265868641385517070539

Offset

0,3

Links

Table of n, a(n) for n=0..12.

Prog

(PARI) {a(n)=local(P=matrix(n+1, n+1, r, c, if(r>=c, (r^3)^(r-c)/(r-c)!)), D=matrix(n+1, n+1, r, c, if(r==c, r))); (P^-1*D*P)[n+1, 1]/(n+1)^3}

Crossrefs

Cf. A107671, A107672, A107676.

Sequence in context: A319025 A253127 A078955 * A130037 A047910 A357230

Adjacent sequences: A107670 A107671 A107672 * A107674 A107675 A107676

Keyword

nonn

Author

Paul D. Hanna, Jun 07 2005

Status

approved