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A032223 "DGJ" (bracelet, element, labeled) transform of 2,1,1,1... 1
1, 2, 3, 7, 21, 41, 178, 1583, 3573, 15205, 106206, 1931645, 5047298, 26136085, 128396115, 1309192204, 40241522045, 123336716525, 727042897270, 3945269219753, 27068403237870, 342602269335547, 17547655257500369 (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)

PROG

(PARI) seq(n)=[subst(serlaplace(p/y + polcoeff(p, 1) + polcoeff(p, 2)), y, 1)/2 | p <- Vec(serlaplace(y-1 + (1 + x*y)*prod(k=1, n, 1 + x^k*y/k! + O(x*x^n))))] \\ Andrew Howroyd, Sep 11 2018

CROSSREFS

Sequence in context: A011968 A080021 A032313 * A002863 A047693 A212265

Adjacent sequences:  A032220 A032221 A032222 * A032224 A032225 A032226

KEYWORD

nonn

AUTHOR

Christian G. Bower

EXTENSIONS

a(0)=1 prepended by Andrew Howroyd, Sep 11 2018

STATUS

approved

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Last modified October 20 01:13 EDT 2018. Contains 316378 sequences. (Running on oeis4.)