A251443 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having the minimum of its diagonal elements less than the absolute difference of its antidiagonal elements

45, 2429, 618813, 711649307, 3659979005933, 83996177772618131, 8602687112500228141685, 3931528001788630390436453471, 8017578071204256749719798723737676

Offset

1,1

Comments

Diagonal of A251451

Links

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

Example

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

Crossrefs

Sequence in context: A095658 A342405 A279439 * A109941 A035097 A184286

Adjacent sequences: A251440 A251441 A251442 * A251444 A251445 A251446

Keyword

nonn

Author

R. H. Hardin, Dec 02 2014

Status

approved