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A113679 Expansion of (1-x-2x^2)/(1-x). +0
2
1, 0, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2 (list; graph; listen)
OFFSET

0,3

FORMULA

a(n)=C(0, n)+2*C(1, n)-2.

CROSSREFS

Cf. A113680.

Sequence in context: A000520 A044930 A032545 this_sequence A004218 A044931 A044932

Adjacent sequences: A113676 A113677 A113678 this_sequence A113680 A113681 A113682

KEYWORD

easy,sign

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Nov 04 2005

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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