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A367489 Expansion of e.g.f. -x * log(3 - 2*exp(x)). 3
0, 0, 4, 18, 120, 1110, 13140, 189042, 3197040, 62093358, 1361253900, 33236925546, 894243758760, 26281928034726, 837663638344260, 28775491618091490, 1059805146165293280, 41657455054069680414, 1740535210734651716220, 77029901631623181859674 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
FORMULA
a(n) = n * Sum_{k=1..n-1} 2^k * (k-1)! * Stirling2(n-1,k).
PROG
(PARI) a(n) = n*sum(k=1, n-1, 2^k*(k-1)!*stirling(n-1, k, 2));
CROSSREFS
Sequence in context: A053529 A005442 A306881 * A084661 A112294 A346680
KEYWORD
nonn,easy
AUTHOR
Seiichi Manyama, Nov 19 2023
STATUS
approved

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Last modified April 15 02:01 EDT 2024. Contains 371667 sequences. (Running on oeis4.)