login
This site is supported by donations to The OEIS Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A264637 Number of nX3 arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 4. 0
2, 28, 960, 46656, 4561920, 829440000, 218972160000, 73903104000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A264638.

LINKS

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

EXAMPLE

Some solutions for n=4

..8..0..9....8..4..0....4..8..0....4.10..9....0..4..8....0..4..9....2..8..4

..6..4..1...10..5..9...10..6..1....0..6..5....6..1..5...10..8..5...10..0..5

.10..2..5....2..6..1....2..3..9....8..2..1....2..9..7....2..7..1....6.11..1

..3.11..7....7..3.11...11..7..5....3..7.11...10.11..3....6.11..3....3..7..9

CROSSREFS

Cf. A264638.

Sequence in context: A264411 A009256 A012725 * A012756 A009403 A026944

Adjacent sequences:  A264634 A264635 A264636 * A264638 A264639 A264640

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 19 2015

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 December 8 04:31 EST 2019. Contains 329850 sequences. (Running on oeis4.)