A231256 Number of (n+1)X(n+1) 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order.

2, 15, 304, 19503, 3130708, 1350570015, 1496478177166, 4339950773804841, 32510127329051575349, 631327524382609726232392, 31694391041907948471880253567

Offset: 1

Author

R. H. Hardin, Nov 06 2013

Keywords

• nonn

Comments

Diagonal of A231263

Examples

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