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A114251
C(3+2*n,3+n)*C(8+2*n,0+n)
0
1, 50, 1386, 30576, 600600, 11027016, 193993800, 3316739712, 55588369122, 918398981500, 15013703965260, 243495727020000, 3925151119562400, 62976611010020400, 1006711677146430000, 16046173576808179200, 255175067057177767500, 4050491847815341688760
OFFSET
0,2
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
KEYWORD
easy,nonn
AUTHOR
Zerinvary Lajos, Feb 04 2006
EXTENSIONS
More terms from Harvey P. Dale, Jul 26 2019
STATUS
approved