1,2
This count includes equivalent matrices.
Table of n, a(n) for n=1..5.
Eric Weisstein's World of Mathematics, Hadamard's Maximum Determinant Problem
Eric Weisstein's World of Mathematics, (-1, 0, 1)-Matrix
Index entries for sequences related to Hadamard matrices
Index entries for sequences related to maximal determinants
Cf. A003433.
Sequence in context: A333864 A358158 A013953 * A323996 A094073 A137342
Adjacent sequences: A051750 A051751 A051752 * A051754 A051755 A051756
nonn,more
Eric W. Weisstein
a(4) from Jud McCranie, Oct 15 2000
a(5) from Giovanni Resta, Feb 20 2009
approved