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A264562
Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 3.
0
1, 15, 888, 84672, 17444160, 5356808640, 2800372248576
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OFFSET
1,2
COMMENTS
Row 3 of
A264560
.
LINKS
Table of n, a(n) for n=1..7.
EXAMPLE
Some solutions for n=4
..6..7..9..3....0.10..6..9....6.10..0..1....0.10..6..4....6..9..7..1
..4.10..2..0....7..1..3.11....9..5..3..7....2.11..3..7....0..3.11..5
..8..1..5.11....2..8..4..5....4..2..8.11....8..5..9..1...10..4..2..8
CROSSREFS
Cf.
A264560
.
Sequence in context:
A208304
A258796
A232364
*
A211109
A249963
A157462
Adjacent sequences:
A264559
A264560
A264561
*
A264563
A264564
A264565
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Nov 17 2015
STATUS
approved
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Last modified August 29 23:34 EDT 2024. Contains 375520 sequences. (Running on oeis4.)