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A114201 C(1+2*n,1+n)*C(6+2*n,0+n) 0
1, 24, 450, 7700, 126126, 2018016, 31855824, 498841200, 7773608700, 120784604512, 1873533922260, 29034766346040, 449790717967500, 6967723880880000, 107959904588606400, 1673378521123399200, 25949671331244477300, 402629171550425820000, 6250759024406391495000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..18.

EXAMPLE

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

if n=10 then C(1+2*n,1+n)*C(6+2*n,0+n)=C(21,11)*C(26,10)=352716*5311735=1873533922260

MATHEMATICA

Table[Binomial[2n+1, n+1]Binomial[2n+6, n], {n, 0, 20}] (* Harvey P. Dale, Jun 08 2013 *)

CROSSREFS

Sequence in context: A187625 A024303 A060195 * A263476 A263470 A276816

Adjacent sequences:  A114198 A114199 A114200 * A114202 A114203 A114204

KEYWORD

easy,nonn

AUTHOR

Zerinvary Lajos, Feb 04 2006

EXTENSIONS

More terms from Harvey P. Dale, Jun 08 2013

STATUS

approved

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Last modified October 18 12:19 EDT 2021. Contains 348067 sequences. (Running on oeis4.)