A252921 Number of (4+2)X(n+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

258746, 3590945, 54457598, 899378367, 16084394412, 280079543014, 4917133211603, 88400589505093, 1559068278259511, 27650186219325071, 494188223889426223, 8760232221387520144, 155647635491709722213

Offset

1,1

Comments

Row 4 of A252917

Links

R. H. Hardin, Table of n, a(n) for n = 1..15

Example

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

Crossrefs

Sequence in context: A065794 A206253 A157670 * A216204 A153980 A317747

Adjacent sequences: A252918 A252919 A252920 * A252922 A252923 A252924

Keyword

nonn

Author

R. H. Hardin, Dec 24 2014

Status

approved