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Search: id:A138279
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A138279 Last digit of A136324. After 0, 1, period 4: repeat 1, 2, 5, 6 =A131800. +0
1
0, 1, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6, 1, 2, 5, 6 (list; graph; listen)
OFFSET

0,4

FORMULA

a(n)=(1/6)*{-(n mod 4)+2*[(n+1) mod 4]+11*[(n+2) mod 4]+2*[(n+3) mod 4]}-5*{C(2*n,n) mod 2}-5*{C((n+1)^2,n+3) mod 2}, with n>=0 - Paolo P. Lava (ppl(AT)spl.at), May 07 2008

CROSSREFS

Sequence in context: A011037 A111987 A004650 this_sequence A131800 A086038 A134387

Adjacent sequences: A138276 A138277 A138278 this_sequence A138280 A138281 A138282

KEYWORD

nonn

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), May 06 2008

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Last modified September 7 23:08 EDT 2008. Contains 143486 sequences.


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