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A bisection of A007346.
1

%I #3 Jun 20 2016 13:16:09

%S 8,24,7680,64,3715891200,194641920,1428329123020800,160,

%T 1678343852714360832000,637770664031457116160000,

%U 4714400748520531002654720000,2602349213183333113465405440000,27064431817106664380040216576000000

%N A bisection of A007346.

%Y Cf. A007346, A002866, A002671.

%K nonn

%O 0,1

%A _N. J. A. Sloane_, Jun 20 2016