A207879 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 1 1 vertically.

2, 4, 4, 6, 16, 6, 9, 36, 36, 9, 13, 81, 72, 81, 13, 19, 169, 164, 164, 169, 19, 28, 361, 336, 400, 336, 361, 28, 41, 784, 702, 824, 824, 702, 784, 41, 60, 1681, 1488, 1940, 1648, 1940, 1488, 1681, 60, 88, 3600, 3164, 4200, 4160, 4160, 4200, 3164, 3600, 88, 129

Offset: 1

Author

R. H. Hardin Feb 21 2012

Keywords

• nonn
• tabl

Comments

Table starts

..2....4....6....9....13....19.....28.....41.....60......88.....129......189

..4...16...36...81...169...361....784...1681...3600....7744...16641....35721

..6...36...72..164...336...702...1488...3164...6612...13916...29532....62032

..9...81..164..400...824..1940...4200...9276..21004...46026..102674...228630

.13..169..336..824..1648..4160...8892..19710..44868..100056..224792...497348

.19..361..702.1940..4160.10742..24952..61530.143916..341856..844144..1976858

.28..784.1488.4200..8892.24952..51696.136490.313524..741944.1781472..4256398

.41.1681.3164.9276.19710.61530.136490.380632.932930.2455492.6227022.15894853

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..760

Crossrefs

Column 1 is A000930(n+3)

Column 2 is A207170

Column 3 is A207683