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A099530 Expansion of 1/(1-x+x^4). 3
1, 1, 1, 1, 0, -1, -2, -3, -3, -2, 0, 3, 6, 8, 8, 5, -1, -9, -17, -22, -21, -12, 5, 27, 48, 60, 55, 28, -20, -80, -135, -163, -143, -63, 72, 235, 378, 441, 369, 134, -244, -685, -1054, -1188, -944, -259, 795, 1983, 2927, 3186, 2391, 408, -2519, -5705, -8096, -8504, -5985, -280, 7816, 16320, 22305, 22585, 14769 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,7

COMMENTS

Binomial transform of A099531.

LINKS

Table of n, a(n) for n=0..62.

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

FORMULA

a(n)=a(n-1)-a(n-4); a(n)=sum{k=0..floor(n/4), binomial(n-3k, k)(-1)^k}.

CROSSREFS

Cf. A050935.

Sequence in context: A022906 A285408 A101914 * A167544 A334484 A334234

Adjacent sequences:  A099527 A099528 A099529 * A099531 A099532 A099533

KEYWORD

easy,sign

AUTHOR

Paul Barry, Oct 20 2004

STATUS

approved

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Last modified September 24 03:15 EDT 2021. Contains 347623 sequences. (Running on oeis4.)