A252901 Number of (n+2)X(3+2) 0..3 arrays with every consecutive three elements in every row and column having exactly two distinct values, and new values 0 upwards introduced in row major order

19320, 306680, 4385530, 66702186, 990142582, 14924920644, 223188511528, 3356288767614, 50316155376656, 755701431331706, 11339970860065408, 170249371855057578, 2555320401273992394, 38360187030527862622

Offset

1,1

Comments

Column 3 of A252904

Links

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

Example

Some solutions for n=1
..0..0..1..1..2....0..1..0..1..1....0..0..1..1..0....0..0..1..0..0
..2..1..2..1..1....2..2..3..2..2....1..1..2..1..1....1..2..2..1..2
..2..1..1..3..1....2..2..3..2..2....0..0..1..0..1....1..2..2..0..0

Crossrefs

Sequence in context: A184667 A280555 A031831 * A126721 A323558 A321642

Adjacent sequences: A252898 A252899 A252900 * A252902 A252903 A252904

Keyword

nonn

Author

R. H. Hardin, Dec 24 2014

Status

approved