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Search: id:A088220
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A088220 Coefficient of x^n in g.f.^n is A000172(n). +0
1
1, 2, 3, 4, 9, 24, 75, 252, 903, 3376, 13068, 51960, 211222, 874440, 3676335, 15660680, 67474980, 293617248, 1288876879, 5701688928, 25397905302, 113838544880, 513117505278, 2324638603980, 10580591966824, 48362627748240 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A086865 A122534 A101135 this_sequence A085612 A073915 A076381

Adjacent sequences: A088217 A088218 A088219 this_sequence A088221 A088222 A088223

KEYWORD

nonn

AUTHOR

Michael Somos, Sep 24 2003

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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