A032225 "DGJ" (bracelet, element, labeled) transform of 1,3,5,7...

1, 1, 3, 14, 45, 284, 1570, 10527, 120589, 1032992, 13335366, 182043905, 2160966588, 35883374045, 563870609289, 8657972073051, 156350254702885, 3047170542210952, 55157193295047166, 1048777885842926925, 24322129996954683064, 514342190008751240895, 10665644686998892803631

Offset

0,3

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+prod(k=1, n, (1 + x^k*y/k! + O(x*x^n))^(2*k-1))))] \\ Andrew Howroyd, Sep 11 2018

Crossrefs

Sequence in context: A059672 A302225 A032316 * A032150 A032055 A180785

Adjacent sequences: A032222 A032223 A032224 * A032226 A032227 A032228

Keyword

nonn

Author

Christian G. Bower

Extensions

a(0)=1 prepended and terms a(19) and beyond from Andrew Howroyd, Sep 11 2018

Status

approved