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A083424 (5*4^n+(-2)^n)/6. 5
1, 3, 14, 52, 216, 848, 3424, 13632, 54656, 218368, 873984, 3494912, 13981696, 55922688, 223698944, 894779392, 3579150336, 14316535808, 57266274304, 229064835072, 916259864576, 3665038409728, 14660155736064, 58640618749952 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Binomial transform of A083423

LINKS

Table of n, a(n) for n=0..23.

FORMULA

a(n)=(5*4^n+(-2)^n)/6 G.f. (1+x)/((1-2x)(1+4x)) E.g.f. (5exp(4x)+exp(-2x))/6

CROSSREFS

Sequence in context: A083874 A105331 A017946 * A099487 A179610 A166680

Adjacent sequences:  A083421 A083422 A083423 * A083425 A083426 A083427

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Apr 30 2003

STATUS

approved

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Last modified May 23 20:41 EDT 2013. Contains 225612 sequences.