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

%I #4 Jul 26 2019 16:38:30

%S 1,50,1386,30576,600600,11027016,193993800,3316739712,55588369122,

%T 918398981500,15013703965260,243495727020000,3925151119562400,

%U 62976611010020400,1006711677146430000,16046173576808179200,255175067057177767500,4050491847815341688760

%N C(3+2*n,3+n)*C(8+2*n,0+n)

%e 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

%e 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

%t Table[Binomial[3+2n,3+n]Binomial[8+2n,n],{n,0,20}] (* _Harvey P. Dale_, Jul 26 2019 *)

%Y Cf. A062190.

%K easy,nonn

%O 0,2

%A _Zerinvary Lajos_, Feb 04 2006

%E More terms from _Harvey P. Dale_, Jul 26 2019