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A032058 "BGK" (reversible, element, unlabeled) transform of 1,1,1,1,... 1
1, 1, 1, 2, 2, 3, 6, 7, 10, 14, 29, 33, 51, 67, 97, 176, 218, 309, 426, 589, 778, 1376, 1649, 2379, 3147, 4381, 5653, 7802, 12158, 15231, 20934, 27871, 37438, 49022, 65405, 84213, 128703, 157987, 215533, 279164, 375746, 479133 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

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

C. G. Bower, Transforms (2)

FORMULA

Numbers so far satisfy a(n) = 1/2 * (A032020(n)+1). - Ralf Stephan, Apr 06 2004

PROG

(PARI) seq(n)=[subst(serlaplace(y^0*p + polcoeff(p, 1)), y, 1)/2 | p <- Vec(y-1+prod(k=1, n, 1 + x^k*y + O(x*x^n)))] \\ Andrew Howroyd, Sep 13 2018

CROSSREFS

Sequence in context: A182713 A229626 A091770 * A241744 A039866 A106369

Adjacent sequences:  A032055 A032056 A032057 * A032059 A032060 A032061

KEYWORD

nonn

AUTHOR

Christian G. Bower

EXTENSIONS

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

STATUS

approved

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Last modified October 19 22:28 EDT 2018. Contains 316378 sequences. (Running on oeis4.)