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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.
0
1, 1, 10, 331, 33476, 10204145, 9378590446, 26026690264407, 218132378185337416, 5518274388618175447069, 421034872020570533423509010, 96809747319527667989371938562883
OFFSET
0,3
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
Sequence in context: A257132 A218996 A352798 * A288684 A046747 A338799
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Oct 14 2005
STATUS
approved