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A097949 G.f.: (2+7*x-x^3)/(1+4*x-4*x^3-x^4). 2
-2, 1, -4, 9, -34, 121, -452, 1681, -6274, 23409, -87364, 326041, -1216802, 4541161, -16947844, 63250209, -236052994, 880961761, -3287794052, 12270214441, -45793063714, 170902040409, -637815097924, 2380358351281, -8883618307202, 33154114877521, -123732841202884 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

This is the sequence "ves(n)".

LINKS

Table of n, a(n) for n=0..26.

Index entries for linear recurrences with constant coefficients, signature (-4,0,4,1).

CROSSREFS

Cf. A001353, A097947, A097948.

Sequence in context: A006445 A174255 A254199 * A268572 A117338 A279927

Adjacent sequences:  A097946 A097947 A097948 * A097950 A097951 A097952

KEYWORD

sign

AUTHOR

N. J. A. Sloane, following a suggestion of Creighton Dement, Sep 06 2004

STATUS

approved

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Last modified March 25 15:14 EDT 2017. Contains 284082 sequences.