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A114122 Expansion of (1+x)^2/(1+2x-4x^3-4x^4). 1
1, 0, 1, 2, 0, 4, 4, 0, 16, 0, 16, 32, 0, 64, 64, 0, 256, 0, 256, 512, 0, 1024, 1024, 0, 4096, 0, 4096, 8192, 0, 16384, 16384, 0, 65536, 0, 65536, 131072, 0, 262144, 262144, 0, 1048576 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

Binomial transform is A116404.

LINKS

Table of n, a(n) for n=0..40.

FORMULA

a(n)=-2a(n-1)+4a(n-3)+4a(n-4)

CROSSREFS

Sequence in context: A182059 A103328 A167312 * A319934 A219836 A004174

Adjacent sequences:  A114119 A114120 A114121 * A114123 A114124 A114125

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Feb 07 2006

STATUS

approved

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Last modified February 18 00:37 EST 2020. Contains 332006 sequences. (Running on oeis4.)