A250906 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having its maximum diagonal element less than its minimum antidiagonal element

74, 13401, 18077319, 181725094746, 13614176466285177, 7601083164098734394079, 31627738616791159166366474706, 980775577015597559408509097508207843, 226662690545871494601898816284099112431799133

Offset

1,1

Comments

Diagonal of A250913

Links

R. H. Hardin, Table of n, a(n) for n = 1..10

Example

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

Crossrefs

Sequence in context: A107678 A093274 A337406 * A268090 A278378 A324523

Adjacent sequences: A250903 A250904 A250905 * A250907 A250908 A250909

Keyword

nonn

Author

R. H. Hardin, Nov 28 2014

Status

approved