A032233 "DGK" (bracelet, element, unlabeled) transform of 1,2,3,4,...

1, 1, 2, 5, 8, 16, 28, 49, 89, 162, 301, 566, 1103, 2126, 4114, 8278, 16111, 31883, 62595, 123856, 243854, 476615, 933833, 1820731, 3567964, 6904993, 13397093, 25924377, 50076418, 96470672, 185158835, 355097237

Offset

0,3

Links

Andrew Howroyd, Table of n, a(n) for n = 0..1000

C. G. Bower, Transforms (2)

Prog

(PARI) seq(n)=[subst(serlaplace(p/y + polcoeff(p, 1) + polcoeff(p, 2)), y, 1)/2 | p <- Vec(y-1+prod(k=1, n, (1 + x^k*y + O(x*x^n))^k))] \\ Andrew Howroyd, Sep 13 2018

Crossrefs

Sequence in context: A093065 A301596 A026007 * A026530 A336135 A032254

Adjacent sequences: A032230 A032231 A032232 * A032234 A032235 A032236

Keyword

nonn

Author

Christian G. Bower

Extensions

a(0)=1 prepended by Andrew Howroyd, Sep 13 2018

Status

approved