A183450 T(n,k)=Number of nXk binary arrays with every 1 having exactly two king-move neighbors equal to 1.

1, 1, 1, 1, 5, 1, 1, 9, 9, 1, 1, 13, 18, 13, 1, 1, 33, 30, 30, 33, 1, 1, 69, 107, 72, 107, 69, 1, 1, 121, 265, 283, 283, 265, 121, 1, 1, 253, 553, 831, 2054, 831, 553, 253, 1, 1, 529, 1505, 2399, 9208, 9208, 2399, 1505, 529, 1, 1, 1013, 3852, 7761, 34867, 53608, 34867, 7761

Offset: 1

Author

R. H. Hardin Jan 04 2011

Keywords

• nonn
• tabl

Comments

Table starts

.1....1....1.....1.......1........1..........1...........1............1

.1....5....9....13......33.......69........121.........253..........529

.1....9...18....30.....107......265........553........1505.........3852

.1...13...30....72.....283......831.......2399........7761........23840

.1...33..107...283....2054.....9208......34867......176949.......833001

.1...69..265...831....9208....53608.....257733.....1817225.....11414889

.1..121..553..2399...34867...257733....1744887....16192521....132651622

.1..253.1505..7761..176949..1817225...16192521...216103851...2491241396

.1..529.3852.23840..833001.11414889..132651622..2491241396..39184763856

.1.1013.8922.72396.3619285.65073225.1038281076.26807184942.568464533358

Examples

			Some solutions for 6X5
..0..1..0..0..0....1..1..0..1..1....1..1..0..0..1....0..0..0..1..1
..1..0..1..0..0....0..1..0..1..0....1..0..0..1..1....0..0..0..1..0
..1..0..1..0..0....0..0..0..0..0....0..0..0..0..0....0..1..0..0..0
..1..0..0..1..0....0..0..1..1..0....0..0..0..1..1....1..0..1..0..0
..0..1..0..1..0....0..1..0..0..1....1..1..0..0..1....1..0..1..0..0
..0..0..1..0..0....0..0..1..1..0....1..0..0..0..0....0..1..0..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..363

Crossrefs

Column 2 is A089977(n+1)