A113082 Main diagonal of square table A113081; also, a(n) equals the n-th term in column 0 of the matrix n-th power of triangle A113084.

1, 1, 10, 331, 33476, 10204145, 9378590446, 26026690264407, 218132378185337416, 5518274388618175447069, 421034872020570533423509010, 96809747319527667989371938562883

Offset

0,3

Links

Table of n, a(n) for n=0..11.

Prog

(PARI) {a(n, q=3)=local(M=matrix(n+1, n+1)); for(r=1, n+1, for(c=1, r, M[r, c]=if(r==c, 1, if(c>1, (M^q)[r-1, c-1])+(M^q)[r-1, c]))); return((M^n)[n+1, 1])}

Crossrefs

Cf. A113081, A113084.

Sequence in context: A257132 A218996 A352798 * A288684 A046747 A338799

Adjacent sequences: A113079 A113080 A113081 * A113083 A113084 A113085

Keyword

nonn

Author

Paul D. Hanna, Oct 14 2005

Status

approved