%I #10 Sep 27 2013 17:41:37
%S 1,2,-12,-8,544,-2656,-16320,141696,724224,-6796288,-7730176,
%T 319698944,221900800,-6301081600,-44793036800,2700224856064,
%U 1941732786176,-12433466195968,-27512426201088,2231502495547392,288268735217664,-1425307636596736,-18345681160765440
%N Hankel transform of A000265 (odd part of n).
%C Determinant of the n X n matrix M, where M(i,j) = A000265(i+j-1).
%H Alois P. Heinz, <a href="/A229628/b229628.txt">Table of n, a(n) for n = 1..200</a>
%o (PARI) hankel(v, n)=matdet(matrix(n, n, i, j, v[i+j-1]));
%o a(n)=hankel(vector(2*n, k, k/valuation(k, 2)), n);
%Y Cf. A229625.
%K sign
%O 1,2
%A _Ralf Stephan_, Sep 27 2013