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A088026 Number of "sets of even lists", cf. A000262. +0
5
1, 2, 36, 1560, 122640, 15150240, 2695049280, 650948538240, 204637027795200, 81098021561356800, 39516616693678924800 (list; graph; listen)
OFFSET

0,2

FORMULA

E.g.f: exp(x^2/(1-x^2)).

CROSSREFS

Cf. A052845, A088009.

Sequence in context: A009554 A003092 A046673 this_sequence A126934 A001070 A095229

Adjacent sequences: A088023 A088024 A088025 this_sequence A088027 A088028 A088029

KEYWORD

nonn

AUTHOR

Vladeta Jovovic (vladeta(AT)eunet.rs), Nov 02 2003

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Last modified December 20 13:54 EST 2009. Contains 171081 sequences.


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