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A088389 Number of real regular n X n (0,1) matrices modulo rows permutations. 4
1, 3, 29, 940, 104286, 40050850, 53640013886, 251995529844792 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..8.

Antony Pearson, On Hidden Structures in Contaminated Symbolic Data, Ph. D. thesis, University of Colorado at Boulder (2020) 27835343.

FORMULA

a(n) = A055165(n) / n!.

CROSSREFS

Cf. A055165, A053601.

Sequence in context: A117264 A256043 A065072 * A270883 A094000 A162085

Adjacent sequences:  A088386 A088387 A088388 * A088390 A088391 A088392

KEYWORD

nonn,hard,more

AUTHOR

Yuval Dekel (dekelyuval(AT)hotmail.com), Nov 08 2003

EXTENSIONS

a(8) from Herman Jamke (hermanjamke(AT)fastmail.fm), Feb 24 2008

STATUS

approved

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Last modified October 20 16:07 EDT 2021. Contains 348111 sequences. (Running on oeis4.)