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A308458 Expansion of e.g.f. log(Sum_{k>=0} k^binomial(k,2) * x^k / k!). 1
1, 1, 23, 3994, 9745169, 470126386536, 558542572785461515, 19342808645467142112096240, 22528399370853856386499346950471953, 999999999774716004550606847948627702867525440, 1890591424701781041871514584507296209311760279398415565711 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
EXAMPLE
E.g.f.: x + x^2/2! + 23*x^3/3! + 3994*x^4/4! + 9745169*x^5/5! + 470126386536*x^6/6! + 558542572785461515*x^7/7! + ... .
PROG
(PARI) N=20; x='x+O('x^N); Vec(serlaplace(log(sum(k=0, N, k^binomial(k, 2)*x^k/k!))))
CROSSREFS
Sequence in context: A134798 A368137 A352977 * A103443 A059000 A233235
KEYWORD
nonn
AUTHOR
Seiichi Manyama, May 27 2019
STATUS
approved

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Last modified March 28 15:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)