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A051752 Number of n X n (real) {0,1}-matrices having determinant A003432(n). 5
1, 3, 3, 60, 3600, 529200, 75600, 195955200, 13716864000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

Miodrag Zivkovic, Classification of small (0,1) matrices, Linear Algebra and its Applications, 414 (2006), 310-346

LINKS

Table of n, a(n) for n=1..9.

Eric Weisstein's World of Mathematics, Hadamard's Maximum Determinant Problem.

Eric Weisstein's World of Mathematics, (0, 1)-Matrix

Miodrag Zivkovic, Classification of small (0,1) matrices, arXiv:math/0511636 [math.CO], 2005.

CROSSREFS

Cf. A003432.

Sequence in context: A100065 A066807 A165497 * A102065 A102074 A126227

Adjacent sequences:  A051749 A051750 A051751 * A051753 A051754 A051755

KEYWORD

nonn,hard

AUTHOR

Eric W. Weisstein

EXTENSIONS

a(5) = 3600 from Daniel P. Corson (danl(AT)MIT.EDU), Jan 09 2000

a(6) = 529200, a(7) = 75600 from Ulrich Hermisson (uhermiss(AT)rz.uni-leipzig.de), Feb 25, 2003

More terms from Miodrag Zivkovic (ezivkovm(AT)matf.bg.ac.yu), Feb 28 2006

STATUS

approved

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Last modified May 23 10:37 EDT 2018. Contains 304466 sequences. (Running on oeis4.)