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A267660
Number of n X n 0..1 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order.
0
1, 8, 108, 3143, 80404, 5663798, 264709135, 46354321490, 3947286385526, 1938755845909663
OFFSET
1,2
COMMENTS
Diagonal of A267667.
EXAMPLE
Some solutions for n=5
..0..0..1..0..1....0..0..1..0..1....0..1..0..1..1....0..0..1..1..0
..0..1..0..0..1....1..0..1..0..1....1..1..0..0..1....1..1..0..0..1
..0..1..0..1..1....0..0..1..0..1....0..0..1..0..1....1..0..1..1..0
..1..0..1..0..0....1..0..1..0..1....0..1..0..0..1....1..0..1..0..1
..0..1..0..1..1....1..0..0..1..1....0..1..0..1..1....0..1..0..0..1
CROSSREFS
Cf. A267667.
Sequence in context: A099699 A084915 A138456 * A273057 A095917 A259233
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 19 2016
STATUS
approved