A251242 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the minimum of its antidiagonal elements

75, 14265, 20904689, 236035946835, 20534495636679387, 13764744150100667222985, 71093648993125363900542904561, 2829255370682961509218005180234886323

Offset

1,1

Comments

Diagonal of A251249

Links

R. H. Hardin, Table of n, a(n) for n = 1..11

Example

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

Crossrefs

Sequence in context: A294983 A361282 A093275 * A259464 A116527 A263064

Adjacent sequences: A251239 A251240 A251241 * A251243 A251244 A251245

Keyword

nonn

Author

R. H. Hardin, Dec 01 2014

Status

approved