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a(n) = A029572(n) / 24.
0

%I #5 May 12 2016 18:34:23

%S 0,0,0,0,0,1,6,42,336,3024,27216,299376,3592512,46702656,653837184,

%T 9880206336,158083301376,2687416123392,48373490221056,919096314200064,

%U 18375168222867456,385878532680216576,8489327718964764672,195254537536189587456,4686108900868550098944

%N a(n) = A029572(n) / 24.

%Y Cf. A029572.

%K nonn

%O 0,7

%A _N. J. A. Sloane_.