A206889 T(n,k)=Number of nXk 0..1 arrays avoiding 0 1 0 horizontally and 1 0 0 vertically.

2, 4, 4, 7, 16, 7, 12, 49, 49, 12, 21, 144, 240, 144, 20, 37, 441, 1103, 1112, 400, 33, 65, 1369, 5357, 7878, 4792, 1089, 54, 114, 4225, 26564, 59812, 51800, 20129, 2916, 88, 200, 12996, 130828, 467146, 607043, 330951, 82807, 7744, 143, 351, 40000, 641137

Offset: 1

Author

R. H. Hardin Feb 13 2012

Keywords

• nonn
• tabl

Comments

Table starts

..2....4......7.......12........21..........37............65............114

..4...16.....49......144.......441........1369..........4225..........12996

..7...49....240.....1103......5357.......26564........130828.........641137

.12..144...1112.....7878.....59812......467146.......3619683.......27856426

.20..400...4792....51800....607043.....7354488......88342972.....1052865902

.33.1089..20129...330951...5963040...111550389....2067672443....37988878275

.54.2916..82807..2070564..57268342..1648854501...47015346159..1328156697136

.88.7744.337209.12830802.544455870.24096775331.1055711535814.45805591252624

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..364

Crossrefs

Column 1 is A000071(n+3)

Column 2 is A188516

Column 3 is A188757

Row 1 is A005251(n+3)

Row 2 is A188501

Row 3 is A188768