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A032162 Shifts left 2 places under "CGK" (necklace, element, unlabeled) transform. 1
1, 1, 1, 1, 2, 2, 4, 7, 11, 21, 36, 72, 131, 250, 479, 924, 1832, 3553, 7039, 13952, 27720, 55482, 111199, 223683, 451416, 912333, 1850179, 3758123, 7652318, 15609910, 31896318, 65290662, 133841148, 274787842, 564923951 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Andrew Howroyd, Table of n, a(n) for n = 1..200

C. G. Bower, Transforms (2)

PROG

(PARI)

CGK(v)={apply(p->subst(serlaplace(p/y), y, 1), Vec(prod(k=1, #v, (1 + x^k*y + O(x*x^#v))^v[k])-1, -#v))}

seq(n)={my(v=vector(2-n%2, i, 1)); for(i=1, (n-1)\2, v=concat([1, 1], CGK(v))); v} \\ Andrew Howroyd, Sep 20 2018

CROSSREFS

Sequence in context: A277752 A095054 A316210 * A000983 A095325 A179183

Adjacent sequences:  A032159 A032160 A032161 * A032163 A032164 A032165

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified October 17 14:25 EDT 2018. Contains 316281 sequences. (Running on oeis4.)