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Search: id:A118969
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A118969 2*binomial(5n+1,n)/(4n+2). +0
2
1, 2, 11, 80, 665, 5980, 56637, 556512, 5620485, 57985070, 608462470, 6474009360, 69682358811, 757366074080, 8300675584120, 91634565938880, 1018002755977245, 11372548404732930, 127677890035721025, 1439777493407492640 (list; graph; listen)
OFFSET

0,2
COMMENT

A quadrisection of A118968.

CROSSREFS

Sequence in context: A094569 A099661 A027110 this_sequence A056846 A104086 A086406

Adjacent sequences: A118966 A118967 A118968 this_sequence A118970 A118971 A118972

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), May 07 2006

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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