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A203560
Number of nX4 0..2 arrays with row sums equal and column sums equal
1
3, 33, 177, 5673, 32613, 513903, 7343451, 185804265, 1849858773, 30348858003, 499616140191, 10882786433775, 141444270208647, 2412815237573445, 41425627536496497, 824284992576210537, 12447291755448613317
OFFSET
1,1
COMMENTS
Column 4 of A203564
LINKS
EXAMPLE
Some solutions for n=5
..1..0..2..1....0..1..2..1....1..1..1..1....2..1..1..0....2..0..0..2
..0..2..0..2....0..0..2..2....0..0..2..2....1..0..1..2....2..0..2..0
..0..2..2..0....1..0..1..2....1..2..1..0....2..1..0..1....1..1..1..1
..2..1..1..0....2..2..0..0....1..2..0..1....0..1..1..2....0..2..0..2
..2..0..0..2....2..2..0..0....2..0..1..1....0..2..2..0....0..2..2..0
CROSSREFS
Sequence in context: A062215 A279885 A132122 * A289083 A195578 A370083
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 03 2012
STATUS
approved