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A361097
E.g.f. satisfies A(x) = exp( 1/(1 - x/A(x)^3) - 1 ).
6
1, 1, -3, 22, -251, 3816, -71207, 1542640, -36997431, 929097856, -22062115979, 334968255744, 13395424571725, -2177817789105152, 201597999475333329, -16622491076645341184, 1332634806870147259537, -107073894723559010304000
OFFSET
0,3
LINKS
FORMULA
a(n) = n! * Sum_{k=0..n} (-3*n+1)^(k-1) * binomial(n-1,n-k)/k!.
PROG
(PARI) a(n) = n!*sum(k=0, n, (-3*n+1)^(k-1)*binomial(n-1, n-k)/k!);
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Mar 01 2023
STATUS
approved