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A032304 "EFK" (unordered, size, unlabeled) transform of 1,3,5,7,... 0
1, 3, 8, 12, 31, 56, 107, 168, 372, 620, 1032, 1819, 2888, 5228, 8821, 13692, 21764, 36528, 54756, 92384, 145180, 222809, 339596, 524468, 803716, 1204461, 1884224, 2844820, 4202784, 6291608, 9287236, 13623388 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..32.

C. G. Bower, Transforms (2)

FORMULA

G.f.: prod(k=1..inf) (1+(2*k-1)*x^k).

CROSSREFS

Sequence in context: A058582 A178720 A027292 * A032217 A032142 A032046

Adjacent sequences:  A032301 A032302 A032303 * A032305 A032306 A032307

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified February 23 23:30 EST 2018. Contains 299595 sequences. (Running on oeis4.)