%I M2111 #11 Mar 30 2012 16:44:56
%S 1,2,18,4608,1800000000,5077997833420800000000,
%T 5608281336980602120684110607059901336780800000000
%N Product k^(2^(k-2)), k = 2..n.
%D M. E. Mays, A worst case of the Fibonacci-Sylvester expansion, J. Combin. Math. Combin. Computing, 1 (1987), 141-148.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%K nonn,easy
%O 1,2
%A _N. J. A. Sloane_.