A250919 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having its minimum diagonal element less than its minimum antidiagonal element

58, 4148, 1320397, 1887760064, 11784958341212, 326142987792877076, 39794970725248251340754, 21426748780832973687500615661, 50928642492582508852724999569973939

Offset

1,1

Comments

Diagonal of A250927

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Sequence in context: A207474 A207530 A042625 * A282438 A308391 A128934

Adjacent sequences: A250916 A250917 A250918 * A250920 A250921 A250922

Keyword

nonn

Author

R. H. Hardin, Nov 28 2014

Status

approved