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A099934
Antidiagonal sums of array A007754.
0
1, 2, 4, 11, 41, 195, 1130, 7716, 60599, 537676, 5316162, 57940107, 689965123, 8911606493, 124072525780, 1852176280208, 29510747957549, 499830538998126, 8967438954008720, 169881509587167555
OFFSET
0,2
MATHEMATICA
a[0] = 1; a[1] = 2; a[n_]/; n>=2 := a[n] = n a[n-1] - a[n-2] + 1; Table[a[n], {n, 0, 15}] - David Callan, Jul 22 2008
CROSSREFS
Sequence in context: A013170 A094762 A295772 * A067353 A105996 A213937
KEYWORD
nonn
AUTHOR
Ralf Stephan, Nov 06 2004
STATUS
approved