A207426 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 0 vertically.

2, 4, 4, 6, 16, 6, 9, 36, 36, 9, 15, 81, 114, 81, 14, 25, 225, 361, 351, 196, 21, 40, 625, 1425, 1521, 1162, 441, 31, 64, 1600, 5625, 8463, 6889, 3633, 961, 46, 104, 4096, 20550, 47089, 55361, 29929, 11067, 2116, 68, 169, 10816, 75076, 241087, 444889, 341329

Offset: 1

Author

R. H. Hardin Feb 17 2012

Keywords

• nonn
• tabl

Comments

Table starts

..2....4.....6......9.......15........25.........40...........64...........104

..4...16....36.....81......225.......625.......1600.........4096.........10816

..6...36...114....361.....1425......5625......20550........75076........282494

..9...81...351...1521.....8463.....47089.....241087......1234321.......6520459

.14..196..1162...6889....55361....444889....3210938.....23174596.....174570082

.21..441..3633..29929...341329...3892729...39698733....404854641....4315250265

.31..961.11067.127449..2048823..32936121..474552171...6837470721..102807481767

.46.2116.33994.546121.12436631.283215241.5755114104.116947584576.2485504480392

Examples

			Some solutions for n=4 k=3
..0..1..1....1..1..0....0..1..1....1..1..0....1..0..0....0..1..1....1..1..1
..1..1..0....0..0..1....0..1..1....1..0..1....0..0..1....1..0..0....1..1..1
..1..1..1....0..1..1....0..1..1....1..0..1....1..0..1....1..0..1....1..1..1
..1..0..1....0..1..1....0..1..1....0..0..1....1..0..0....1..0..1....1..1..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..365

Crossrefs

Column 1 is A038718(n+2)

Column 2 is A207069

Row 1 is A006498(n+2)

Row 2 is A189145(n+2)