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A086091 3^n+3n4^(n-1). 2
1, 6, 33, 171, 849, 4083, 19161, 88203, 399777, 1789155, 7923369, 34780155, 151526385, 655905747, 2823355257, 12093944427, 51582654273, 219172472259, 928100356425, 3918172435419, 16496161201041, 69279692903091 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Binomial transform of A086090

LINKS

Table of n, a(n) for n=0..21.

FORMULA

G.f.: (1-5x+7x^2)/((1-3x)(1-4x)^2)

CROSSREFS

Cf. A086092.

Sequence in context: A203155 A084153 A086314 * A081893 A106850 A284076

Adjacent sequences:  A086088 A086089 A086090 * A086092 A086093 A086094

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Jul 09 2003

STATUS

approved

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Last modified November 20 10:09 EST 2019. Contains 329334 sequences. (Running on oeis4.)