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((n+3)!/6)*product( 2*k+1, k=0..n).
0

%I #6 Sep 27 2014 18:05:34

%S 1,12,300,12600,793800,69854400,8172964800,1225944720000,

%T 229251662640000,52269379081920000,14269540489364160000,

%U 4594792037575259520000,1723047014090722320000000,744356310087192042240000000,366967660872985676824320000000

%N ((n+3)!/6)*product( 2*k+1, k=0..n).

%p f := n->((n+3)!/6)*product( '2*k+1','k'=0..n);

%t Table[(n+3)!/6 Product[2k+1,{k,0,n}],{n,0,20}] (* _Harvey P. Dale_, Sep 27 2014 *)

%K nonn,easy

%O 0,2

%A _N. J. A. Sloane_.

%E More terms from _Harvey P. Dale_, Sep 27 2014