A190024 Number of (n+2)X(n+2) binary arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock

512, 45, 158, 458, 834, 1230, 1910, 3018, 5102, 9706, 18522, 34606, 65258, 119934, 217210, 400266, 736570, 1351694, 2506658, 4638314, 8542346, 15797722, 29180334, 53760774, 99319938, 183479122, 338452838, 625204870, 1154917550, 2131346658

Offset

1,1

Comments

Diagonal of A190033

Links

R. H. Hardin, Table of n, a(n) for n = 1..59

Example

Some solutions for 4X4
..0..0..0..0....1..0..0..1....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..1....0..1..0..0....1..0..0..0....1..0..0..0....1..0..0..0
..0..0..0..0....0..0..1..0....0..1..0..0....1..1..0..0....1..1..0..0
..0..0..0..0....0..0..0..1....0..0..1..0....1..1..1..0....0..1..1..0

Crossrefs

Sequence in context: A095843 A095882 A351249 * A376951 A190033 A190025

Adjacent sequences: A190021 A190022 A190023 * A190025 A190026 A190027

Keyword

nonn

Author

R. H. Hardin May 04 2011

Status

approved