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A083672 Binomial transform of 1,8,48,256,1280,6144,... (cf. A002697). 1
1, 1, 9, 25, 97, 321, 1097, 3641, 12033, 39361, 127945, 413337, 1328609, 4251521, 13551753, 43046713, 136314625, 430467201, 1355971721, 4261625369, 13366006881, 41841412801, 130754415049, 407953774905, 1270932914177 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..24.

Index entries for linear recurrences with constant coefficients, signature (4,2,-12,-9).

FORMULA

1/6 * [(n+3)3^n + (3n+3)(-1)^n].

O.g.f.: -(x-1)^3/[(-1+3*x)^2*(1+x)^2]. - R. J. Mathar, Apr 02 2008

CROSSREFS

Cf. A045891, A002697.

Sequence in context: A147460 A147475 A146674 * A193644 A083100 A084058

Adjacent sequences:  A083669 A083670 A083671 * A083673 A083674 A083675

KEYWORD

easy,nonn

AUTHOR

Paul Barry, May 02 2003

STATUS

approved

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Last modified December 4 21:30 EST 2020. Contains 338939 sequences. (Running on oeis4.)