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%I #6 Dec 15 2017 17:35:01
%S 3,14,124,1016,131056,4194272,33554368,274877906816,
%T 590295810358705651456,316912650057057350374175800832,
%U 166153499473114484112975882535042048
%N 2^(n-1)*A000668(n).
%K nonn
%O 1,1
%A _Jason Earls_, May 25 2001
%E More terms from _Ralf Stephan_, Mar 25 2003