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A080896 Expansion of the exponential series exp( x T(x) ) = Exp[x/Sqrt[1 - 2 x - 3x^2]], where T(x) is the ordinary generating series of the central trinomial coefficients A002426. +0
1
1, 1, 3, 25, 265, 3741, 64051, 1298053, 30295665, 800411545, 23601417571, 768200763441, 27352316065273, 1057402991121205, 44102326806885075, 1973793512480683741, 94345589402816289121, 4796647490592139950513 (list; graph; listen)
OFFSET

0,3

LINKS

T. D. Noe, Table of n, a(n) for n=0..100

FORMULA

E.G.F. Exp[x/Sqrt[1 - 2 x - 3x^2]]

CROSSREFS

Cf. A002426.

Sequence in context: A064326 A006091 A009042 this_sequence A126746 A118989 A123989

Adjacent sequences: A080893 A080894 A080895 this_sequence A080897 A080898 A080899

KEYWORD

easy,nice,nonn

AUTHOR

Emanuele Munarini (munarini(AT)mate.polimi.it), Mar 31 2003

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.


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