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A051753 Number of n X n (-1,0,1)-matrices having maximum determinant (=A003433(n)). 1
1, 4, 240, 384, 30720 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

This count includes equivalent matrices.

LINKS

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

CROSSREFS

Cf. A003433.

Sequence in context: A281614 A132551 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

STATUS

approved

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Last modified February 21 02:57 EST 2019. Contains 320364 sequences. (Running on oeis4.)