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A032297 "EFJ" (unordered, size, labeled) transform of 2,2,2,2,... 1
1, 2, 2, 14, 18, 62, 566, 1094, 3954, 17150, 242982, 573014, 2717094, 11553622, 74420950, 1427746334, 4237820914, 22743623742, 116389345094, 709019767190, 5556385327158, 152916116876390, 524244823214950, 3357960498345390, 18667422415920486, 129591208469013462 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Andrew Howroyd, Table of n, a(n) for n = 0..200

C. G. Bower, Transforms (2)

FORMULA

E.g.f.: Product_{k > 0} (1 + 2*x^k/k!). - Andrew Howroyd, Sep 11 2018

PROG

(PARI) seq(n)={Vec(serlaplace(prod(k=1, n, 1 + 2*x^k/k! + O(x*x^n))))} \\ Andrew Howroyd, Sep 11 2018

CROSSREFS

Sequence in context: A045685 A045676 A098288 * A032209 A032134 A032038

Adjacent sequences:  A032294 A032295 A032296 * A032298 A032299 A032300

KEYWORD

nonn

AUTHOR

Christian G. Bower

EXTENSIONS

a(0)=1 prepended and terms a(23) and beyond from Andrew Howroyd, Sep 11 2018

STATUS

approved

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Last modified October 21 15:41 EDT 2018. Contains 316424 sequences. (Running on oeis4.)