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A107394 C(n+2,2)*C(n+4,2). 1
6, 30, 90, 210, 420, 756, 1260, 1980, 2970, 4290 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

COMMENTS

Duplicates A033487.

FORMULA

a(n)=A033487(n+1). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 24 2008]

EXAMPLE

If n=0 then C(0+2,2)*C(0+4,2)= C(2,2)*C(4,2)=1*6=6

If n=4 then C(4+2,2)*C(4+4,2)= C(6,2)*C(8,2)=15*28=420

CROSSREFS

Cf. A062196.

Sequence in context: A094143 A009775 A119536 * A033487 A061138 A073948

Adjacent sequences:  A107391 A107392 A107393 * A107395 A107396 A107397

KEYWORD

dead

AUTHOR

Zerinvary Lajos (zlaja(AT)freemail.hu), May 25 2005

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Last modified February 17 02:48 EST 2012. Contains 205978 sequences.