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A107419 C(n+4,4)*C(n+7,7). 1
1, 40, 540, 4200, 23100, 99792, 360360, 1132560, 3185325, 8179600, 19467448, 43439760, 91706160, 184497600, 355816800, 661028544, 1187785665, 2071432440, 3516320500, 5824819000, 9436206780, 14978106000, 23333661000, 35728290000, 53840548125, 79942445856 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

T. D. Noe, Table of n, a(n) for n = 0..1000

EXAMPLE

If n=0 then C(0+4,4)*C(0+7,7)= C(4,4)*C(7,7)=1*1=1

If n=6 then C(6+4,4)*C(6+7,7)=C(10,4)*C(13,7)=210*1716=360360

PROG

(PARI) for(n=0, 29, print1(binomial(n+4, 4)*binomial(n+7, 7), ", "))

CROSSREFS

Cf. A062145.

Sequence in context: A093744 A109105 A247409 * A159946 A185744 A097823

Adjacent sequences:  A107416 A107417 A107418 * A107420 A107421 A107422

KEYWORD

easy,nonn

AUTHOR

Zerinvary Lajos, May 26 2005

EXTENSIONS

Corrected and extended by Rick L. Shepherd, May 27 2005

STATUS

approved

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Last modified December 20 10:32 EST 2014. Contains 252241 sequences.