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A032029
Shifts left twice under "AGK" (ordered, elements, unlabeled) transform.
1
1, 1, 1, 1, 3, 3, 7, 17, 27, 67, 129, 301, 671, 1429, 3291, 7371, 16947, 38863, 88829, 206869, 478833, 1116729, 2613945, 6121019, 14417407, 33963057, 80262149, 190121337, 450986551, 1072398607, 2553394331, 6090283079
OFFSET
1,5
LINKS
C. G. Bower, Transforms (2)
PROG
(PARI)
AGK(v)={apply(p->subst(serlaplace(y^0*p), 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], AGK(v))); v} \\ Andrew Howroyd, Sep 20 2018
CROSSREFS
Sequence in context: A146034 A374534 A376177 * A058571 A058492 A221303
KEYWORD
nonn,eigen
STATUS
approved