A207242 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically.

2, 4, 4, 6, 16, 6, 9, 36, 36, 9, 13, 81, 102, 81, 14, 18, 169, 283, 287, 196, 21, 25, 324, 699, 987, 882, 441, 31, 34, 625, 1526, 2884, 3866, 2491, 961, 46, 46, 1156, 3355, 7165, 13876, 13494, 6759, 2116, 68, 62, 2116, 6888, 17929, 40838, 58026, 44730, 18528

Offset: 1

Author

R. H. Hardin Feb 16 2012

Keywords

• nonn
• tabl

Comments

Table starts

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

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

..6...36...102....283....699....1526.....3355.....6888.....13954.....27816

..9...81...287....987...2884....7165....17929....40646.....90602....196548

.14..196...882...3866..13876...40838...122197...323039....839664...2118081

.21..441..2491..13494..58026..197256...683257..2037721...5952936..16732138

.31..961..6759..44730.228110..886959..3510185.11662500..37779767.116530737

.46.2116.18528.150608.919413.4132837.18982182.71594896.262849612.914523558

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..449

Crossrefs

Column 1 is A038718(n+2)

Column 2 is A207069

Row 1 is A171861(n+1)

Row 2 is A207025