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A084101 Expansion of (1+x)^2/((1-x)(1+x^2)). +0
4
1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1 (list; graph; listen)
OFFSET

0,2

COMMENT

Partial sums of A084099. Inverse binomial transform of A000749 (without leading zeros).

FORMULA

a(n)=binomial(3, mod(n, 4)) - Paul Barry (pbarry(AT)wit.ie), May 25 2003

CROSSREFS

Cf. A084102.

Sequence in context: A126717 A124039 A096433 this_sequence A053386 A090569 A109439

Adjacent sequences: A084098 A084099 A084100 this_sequence A084102 A084103 A084104

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), May 15 2003

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.


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