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A130779 a(0)=a(1)=1, a(2)=2, a(n)=0 for n >= 3. +0
6
1, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; listen)
OFFSET

0,3

COMMENT

Inverse binomial transform of A002522. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 13 2008

FORMULA

G.F.:1+x+2x^2

a(n)=[C((n+2)^2,n+4) mod 2]+[C((n+1)^2,n+3) mod 2]+2*[C(n^2,n+2) mod 2] - Paolo P. Lava (ppl(AT)spl.at), Dec 19 2007

CROSSREFS

Cf. A130706.

Sequence in context: A083919 A063665 A072507 this_sequence A130706 A000038 A063667

Adjacent sequences: A130776 A130777 A130778 this_sequence A130780 A130781 A130782

KEYWORD

nonn

AUTHOR

Paul Curtz, Jul 14 2007

EXTENSIONS

Terms added by Michael Porter (michael_b_porter(AT)yahoo.com), Nov 05 2009

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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