login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A221434 Number of nX4 1..(max n,4) arrays with each row and column having unrepeated values 1
24, 216, 576, 576, 161280, 283046400, 782137036800, 3563924952268800, 25315180943034286080, 269169718618593283276800, 4137679434467601752260608000, 89264433387042486497787641856000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A221438

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..15

EXAMPLE

Some solutions for n=3

..2..4..1..3....4..2..3..1....1..3..2..4....4..1..2..3....2..1..3..4

..3..1..4..2....3..1..4..2....2..4..1..3....1..2..3..4....4..3..2..1

..4..2..3..1....1..4..2..3....4..2..3..1....3..4..1..2....3..4..1..2

CROSSREFS

Sequence in context: A050222 A169635 A269496 * A008655 A133754 A104670

Adjacent sequences:  A221431 A221432 A221433 * A221435 A221436 A221437

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 16 2013

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 20 00:37 EDT 2021. Contains 348098 sequences. (Running on oeis4.)