A207895 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 0 and 1 1 1 vertically.

2, 4, 4, 6, 16, 6, 9, 36, 36, 10, 13, 81, 84, 100, 16, 19, 169, 198, 292, 256, 26, 28, 361, 462, 870, 912, 676, 42, 41, 784, 1080, 2446, 3358, 2812, 1764, 68, 60, 1681, 2520, 6952, 11196, 12040, 8928, 4624, 110, 88, 3600, 5886, 20168, 38160, 49442, 47320, 28152

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

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

..6...36....84....198.....462....1080.....2520......5886......13746......32100

.10..100...292....870....2446....6952....20168.....57838.....164914.....473632

.16..256...912...3358...11196...38160...135714....471374....1605156....5575548

.26..676..2812..12040...49442..205258...856480...3559040...14795830...61589756

.42.1764..8928..47320..231900.1153532..5888458..29719004..148308700..747498440

.68.4624.28152.182192.1070030.6420722.39828558.243318702.1460399404.8907998820

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..419

Crossrefs

Column 1 is A006355(n+2)

Column 2 is A206981

Column 3 is A207341

Column 4 is A207662

Row 1 is A000930(n+3)

Row 2 is A207170