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A265088 Number of n X 4 arrays of permutations of 4 copies of 0..n-1 with row sums equal and column sums equal. 0
1, 6, 90, 4464, 493920, 128269440, 57943903500 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A265089.

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=4

..3..2..0..1....2..2..0..2....3..3..0..0....3..1..1..1....0..1..3..2

..0..1..2..3....3..0..2..1....1..1..3..1....1..2..0..3....3..2..0..1

..3..2..1..0....1..1..1..3....2..0..2..2....2..0..2..2....3..1..2..0

..0..1..3..2....0..3..3..0....0..2..1..3....0..3..3..0....0..2..1..3

CROSSREFS

Cf. A265089.

Sequence in context: A218758 A219304 A305324 * A077370 A226382 A095864

Adjacent sequences: A265085 A265086 A265087 * A265089 A265090 A265091

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 01 2015

STATUS

approved

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Last modified January 31 12:38 EST 2023. Contains 359971 sequences. (Running on oeis4.)