%I #11 Mar 04 2020 22:45:12
%S 1,1,1,1,2,2,6,4,5,10
%N Number of inequivalent cyclic Hadamard difference sets with parameters (2^n-1, 2^(n-1)-1, 2^(n-2)-1).
%H P. Gaal and S. W. Golomb, <a href="https://doi.org/10.1090/S0025-5718-00-01196-0">Exhaustive determination of (1023,511,255) cyclic Hadamard difference sets</a>, Math. Comp. Math. Comp. 70 (2001), no. 233, 357-366.
%K nonn,nice,hard,more
%O 1,5
%A _N. J. A. Sloane_