A252885 Number of (3+2)X(n+2) 0..2 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

18931, 175360, 1769486, 18443090, 194162037, 2048947027, 21664764833, 229288736507, 2428049723198, 25721944590553, 272531782389953, 2887876599290471, 30603380003328253, 324319086764842024

Offset

1,1

Comments

Row 3 of A252882

Links

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

Example

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

Crossrefs

Sequence in context: A342080 A251015 A277787 * A232576 A339962 A235928

Adjacent sequences: A252882 A252883 A252884 * A252886 A252887 A252888

Keyword

nonn

Author

R. H. Hardin, Dec 24 2014

Status

approved