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%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
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