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A134977 Period 6: repeat 1, 4, 2, 3, 0, 2 . +0
1
1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2 (list; graph; listen)
OFFSET

0,2

COMMENT

North-West diagonal sums of A134658.

FORMULA

O.g.f.: -1/(x+1)-2/(x-1)+x/(x^2-x+1) . a(n) = 2-(-1)^n+A010892(n-1) . - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 08 2008

a(n)=(1/30)*{9*(n mod 6)-6*[(n+1) mod 6]+19*[(n+2) mod 6]-[(n+3) mod 6]+14*[(n+4) mod 6]-11*[(n+5) mod 6]}, with n>=0 - Paolo P. Lava (ppl(AT)spl.at), Feb 11 2008

CROSSREFS

Cf. A119910, A130784, A131756.

Adjacent sequences: A134974 A134975 A134976 this_sequence A134978 A134979 A134980

Sequence in context: A136202 A075418 A096870 this_sequence A145326 A016513 A063447

KEYWORD

nonn

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Feb 04 2008

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Last modified January 8 02:43 EST 2009. Contains 152824 sequences.


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