login
A265090
Number of 4Xn arrays containing n copies of 0..4-1 with row sums equal and column sums equal.
0
0, 24, 0, 4464, 0, 2850360, 0, 2645541360, 0, 2890115427024, 0, 3487466070335016, 0, 4506154929610407216, 0, 6121513933821142187760, 0
OFFSET
1,2
COMMENTS
Row 4 of A265089.
EXAMPLE
Some solutions for n=4
..1..3..2..0....0..2..3..1....3..2..1..0....3..0..3..0....0..1..2..3
..2..0..3..1....0..1..2..3....0..1..3..2....1..2..1..2....3..2..1..0
..3..1..0..2....3..2..1..0....1..0..2..3....2..1..0..3....2..0..3..1
..0..2..1..3....3..1..0..2....2..3..0..1....0..3..2..1....1..3..0..2
CROSSREFS
Cf. A265089.
Sequence in context: A340135 A364203 A308304 * A174560 A267427 A040581
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 01 2015
STATUS
approved