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Search: id:A107421
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A107421 C(n+6,6)*C(n+9,9). +0
1
1, 70, 1540, 18480, 150150, 924924, 4624620, 19631040, 73002930, 243343100, 739763024, 2078672960, 5456516520, 13495999440, 31674284400, 70950397056, 152432493675, 315413948850, 630827897700, 1223211990000, 2305754601150 (list; graph; listen)
OFFSET

0,2

EXAMPLE

If n=0 then C(0+6,6)*C(0+9,9)= C(6,6)*C(9,9)=1*1=1

If n=7 then C(7+6,6)*C(7+9,9)=C(13,6)*C(16,9)=1716*11440=19631040

PROGRAM

(PARI) for(n=0, 29, print1(binomial(n+6, 6)*binomial(n+9, 9), ", "))

CROSSREFS

Cf. A062145.

Sequence in context: A061170 A125114 A061606 this_sequence A076430 A006296 A047835

Adjacent sequences: A107418 A107419 A107420 this_sequence A107422 A107423 A107424

KEYWORD

easy,nonn

AUTHOR

Zerinvary Lajos (zlaja(AT)freemail.hu), May 26 2005

EXTENSIONS

Corrected and extended by Ricky L. Shepherd (rshepherd2(AT)hotmail.com), May 27 2005

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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