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A118790
Secondary diagonal of triangle A118788.
2
1, 3, 23, 255, 3679, 65247, 1371887, 33347535, 919848991, 28382683263, 968565339983, 36217270235055, 1472548026160639, 64679673007670367, 3052084360057720367, 153980839859926277775, 8270901171633696369631
OFFSET
0,2
FORMULA
a(n) = (n+1)!*[x^n] ( x/(2*x + log(1-x)) )^(n+2).
PROG
(PARI)
{a(n)=local(x=X+X^2*O(X^(n))); (n+1)!*polcoeff((x/(2*x+log(1-x)))^(n+2), n, X)}
CROSSREFS
Sequence in context: A199750 A318004 A098681 * A159017 A004700 A199544
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Apr 29 2006
STATUS
approved