A051753 Number of n X n (-1,0,1)-matrices having maximum determinant (=A003433(n)).

1, 4, 240, 384, 30720, 7372800

Offset

1,2

Comments

This count includes equivalent matrices.

Links

Table of n, a(n) for n=1..6.

Minfeng Wang, C++ program to calculate A051753

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

Crossrefs

Cf. A003433.

Sequence in context: A333864 A358158 A013953 * A323996 A094073 A137342

Adjacent sequences: A051750 A051751 A051752 * A051754 A051755 A051756

Keyword

nonn,more

Author

Eric W. Weisstein

Extensions

a(4) from Jud McCranie, Oct 15 2000

a(5) from Giovanni Resta, Feb 20 2009

a(1)-a(5) confirmed and a(6) added by Minfeng Wang, May 29 2024

Status

approved