A114251 C(3+2*n,3+n)*C(8+2*n,0+n)

1, 50, 1386, 30576, 600600, 11027016, 193993800, 3316739712, 55588369122, 918398981500, 15013703965260, 243495727020000, 3925151119562400, 62976611010020400, 1006711677146430000, 16046173576808179200, 255175067057177767500, 4050491847815341688760

Offset

0,2

Links

Table of n, a(n) for n=0..17.

Example

if n=0 then C(3+2*0,3+0)*C(8+2*0,0+0)=C(3,3)*C(8,0)=1*1=1
if n=7 then C(3+2*7,3+7)*C(8+2*7,0+7)=C(17,10)*C(22,7)=19448*170544=3316739712

Mathematica

Table[Binomial[3+2n, 3+n]Binomial[8+2n, n], {n, 0, 20}] (* Harvey P. Dale, Jul 26 2019 *)

Crossrefs

Cf. A062190.

Sequence in context: A031602 A231743 A140520 * A004351 A229316 A159177

Adjacent sequences: A114248 A114249 A114250 * A114252 A114253 A114254

Keyword

easy,nonn

Author

Zerinvary Lajos, Feb 04 2006

Extensions

More terms from Harvey P. Dale, Jul 26 2019

Status

approved