%I #5 May 12 2016 18:32:40

%S 0,0,0,0,1,5,30,210,1470,13230,132300,1455300,17671500,229729500,

%T 3216213000,48243195000,771323553000,13112500401000,236025007218000,

%U 4484475137142000,89692802577378000,1883548854124938000,41438074790748636000,953075720187218628000

%N a(n) = A029571(n) / 6.

%Y Cf. A029571.

%K nonn

%O 0,6

%A _N. J. A. Sloane_.