A088229 Number of n X n (0,1) matrices with distinct rows.

1, 2, 12, 336, 43680, 24165120, 53981544960, 476410007808000, 16517640193528320000, 2252801478912508197273600, 1212983979979000042023881932800, 2587892965783744956308448364029542400, 21943955209199862746410706867184116563968000

Offset

0,2

Links

Andrew Howroyd, Table of n, a(n) for n = 0..50

Formula

a(n) = n! * binomial(2^n, n) = n! * A014070(n).

a(n) ~ 2^(n^2). - Vaclav Kotesovec, Jul 02 2016

Mathematica

Table[(2^n)!/(2^n - n)!, {n, 1, 15}] (* Vaclav Kotesovec, Jul 02 2016 *)

Crossrefs

Cf. A014070.

Sequence in context: A296622 A325756 A181142 * A060596 A074257 A192892

Adjacent sequences: A088226 A088227 A088228 * A088230 A088231 A088232

Keyword

nonn

Author

Yuval Dekel (dekelyuval(AT)hotmail.com), Nov 03 2003

Extensions

More terms from Ray Chandler, Nov 06 2003

a(0)=1 prepended and terms a(12) and beyond from Andrew Howroyd, Jan 27 2020

Status

approved