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A252913
Number of (n+2)X(1+2) 0..3 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order
1
754, 5125, 35674, 258746, 1877439, 13648650, 99324229, 722975673, 5263920930, 38326917454, 279077519048, 2032098819327, 14796932438244, 107745136076069, 784558827528110, 5712851702777901, 41598809395672383, 302906576301327635
OFFSET
1,1
COMMENTS
Column 1 of A252917
FORMULA
Empirical recurrence of order 64 (see link above)
EXAMPLE
Some solutions for n=2
..0..1..0....0..1..1....0..1..2....0..1..1....0..1..1....0..1..2....0..1..2
..1..1..0....0..0..1....0..2..2....0..0..1....2..2..1....2..0..3....1..0..2
..1..0..1....0..0..2....1..1..2....0..1..2....2..2..0....2..0..2....0..1..2
..1..0..0....0..0..2....1..2..1....2..1..1....2..2..1....3..3..2....1..0..2
CROSSREFS
Sequence in context: A197107 A274235 A304608 * A252917 A252918 A232341
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 24 2014
STATUS
approved