A032052 "BGJ" (reversible, element, labeled) transform of 2,2,2,2...

1, 2, 4, 14, 96, 362, 3886, 25286, 151808, 2489450, 14280474, 124799006, 1960723254, 20231550926, 156250567050, 1461001415354, 40509753514368, 310787396790506, 3485943793554442, 33604044850975838

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(y^0*p + polcoeff(p, 1)), y, 1)/2 | p <- Vec(y-1+serlaplace(prod(k=1, n, 1 + x^k*y/k! + O(x*x^n))^2))] \\ Andrew Howroyd, Sep 12 2018

Crossrefs

Sequence in context: A166894 A232108 A339651 * A005737 A219767 A000609

Adjacent sequences: A032049 A032050 A032051 * A032053 A032054 A032055

Keyword

nonn

Author

Christian G. Bower

Extensions

a(0)=1 prepended by Andrew Howroyd, Sep 12 2018

Status

approved