%I A098695
%S A098695 1,1,4,96,18432,35389440,815372697600,263006617337856000,
%T A098695 1357366631815981301760000,126095668058466123464363212800000,
%U A098695 234278891648287676839670388023623680000000
%N A098695 2^[n(n-1)/2] * Prod[k=1..n, k! ].
%H A098695 C. Radoux, <a href="http://www.mat.univie.ac.at/~slc/opapers/s28radoux.html">
               Determinants de Hankel et theoreme de Sylvester</a>
%Y A098695 Equals A006125 * A000178.
%Y A098695 Contribution from Johannes W. Meijer (meijgia(AT)hotmail.com), Feb 20 
               2009: (Start)
%Y A098695 Equals the absolute values of the row sums of A156921.
%Y A098695 (End)
%Y A098695 Sequence in context: A111637 A027872 A146514 this_sequence A059201 A027638 
               A041275
%Y A098695 Adjacent sequences: A098692 A098693 A098694 this_sequence A098696 A098697 
               A098698
%K A098695 nonn
%O A098695 0,3
%A A098695 Ralf Stephan, Sep 22 2004
%E A098695 I have added a(0)=1. The formula 2^[n(n-1)/2] * Prod[k=1..n, k! ] permits 
               this. Furthermore this is in accordance with the statement: Equals 
               A006125 * A000178. The offset should accordingly be changed to 0. 
               Johannes W. Meijer (meijgia(AT)hotmail.com), Feb 20 2009
%E A098695 Offset changed to 0 and second offset to 3 Johannes W. Meijer (meijgia(AT)hotmail.com), 
               Feb 23 2009