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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A252917

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 64

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

Adjacent sequences:  A252910 A252911 A252912 * A252914 A252915 A252916

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 24 2014

STATUS

approved

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Last modified December 10 18:10 EST 2019. Contains 329901 sequences. (Running on oeis4.)