A207488 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 1 0 vertically.

2, 4, 4, 6, 16, 6, 9, 36, 36, 9, 13, 81, 82, 81, 14, 18, 169, 217, 177, 196, 22, 25, 324, 499, 530, 408, 484, 35, 34, 625, 1014, 1322, 1459, 942, 1225, 56, 46, 1156, 2141, 2749, 4041, 3947, 2233, 3136, 90, 62, 2116, 4188, 6217, 8808, 12151, 11306, 5348, 8100, 145, 83

Offset: 1

Author

R. H. Hardin Feb 18 2012

Keywords

• nonn
• tabl

Comments

Table starts

..2....4....6.....9.....13.....18.....25......34......46.......62.......83

..4...16...36....81....169....324....625....1156....2116.....3844.....6889

..6...36...82...217....499...1014...2141....4188....8150....15670....29517

..9...81..177...530...1322...2749...6217...12712...25908....52474...103704

.14..196..408..1459...4041...8808..21991...48044..105558...230156...490287

.22..484..942..3947..12151..26980..73325..170276..397692...935992..2150515

.35.1225.2233.11306..39050..89417.268275..667760.1691526..4324858.10910668

.56.3136.5348.32445.126411.292136.959855.2555724.6929562.19404152.53733153

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..577

Crossrefs

Column 1 is A001611(n+2)

Column 2 is A207436

Row 1 is A171861(n+1)

Row 2 is A207025

Row 3 is A207270