A361091 E.g.f. satisfies A(x) = exp( x/(1 - x/A(x)^2) ).
1, 1, 3, 1, -71, -19, 10051, 12349, -3185391, -9346247, 1797304771, 9717361721, -1582301193527, -13722004186331, 2000705907453891, 25552516703201461, -3432004488804778079, -60960914621687232271, 7660860906885122096515
Offset: 0
Keywords
Links
- Winston de Greef, Table of n, a(n) for n = 0..380
Programs
-
PARI
a(n) = n!*sum(k=0, n, (-2*n+2*k+1)^(k-1)*binomial(n-1, n-k)/k!);
Formula
a(n) = n! * Sum_{k=0..n} (-2*n+2*k+1)^(k-1) * binomial(n-1,n-k)/k!.