A186119 Number of (n+1)X(n+1) binary arrays with every 2X2 subblock diagonal sum less antidiagonal sum equal to some horizontal or vertical neighbor 2X2 subblock diagonal sum less antidiagonal sum

0, 38, 262, 4254, 90054, 4056794, 264173146, 33067061342, 6424488086390

Offset

1,2

Comments

Diagonal of A186128

Links

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

Example

Some solutions for 3X3
..1..1..0....0..1..0....0..1..1....1..1..1....0..1..1....1..1..1....0..1..1
..0..1..1....0..1..0....1..1..0....1..1..1....1..1..1....0..0..0....0..0..0
..1..1..0....0..1..0....0..1..1....0..0..0....1..0..0....0..0..0....1..0..0

Crossrefs

Sequence in context: A209250 A165068 A160281 * A007229 A367968 A297799

Adjacent sequences: A186116 A186117 A186118 * A186120 A186121 A186122

Keyword

nonn

Author

R. H. Hardin Feb 13 2011

Status

approved