A207845 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 1 1 vertically

2, 4, 4, 6, 16, 6, 10, 36, 36, 10, 16, 100, 72, 100, 16, 26, 256, 180, 240, 256, 26, 42, 676, 432, 780, 704, 676, 42, 68, 1764, 1044, 2320, 2816, 2080, 1764, 68, 110, 4624, 2520, 7140, 10144, 9672, 6216, 4624, 110, 178, 12100, 6084, 21600, 38208, 41444, 35952

Offset

1,1

Comments

Table starts

..2....4.....6.....10.....16......26.......42........68........110.........178

..4...16....36....100....256.....676.....1764......4624......12100.......31684

..6...36....72....180....432....1044.....2520......6084......14688.......35460

.10..100...240....780...2320....7140....21600.....65980.....200400......610740

.16..256...704...2816..10144...38208...140032....524480....1928000.....7206080

.26..676..2080...9672..41444..181896...794768...3479268...15223104....66632488

.42.1764..6216..35952.185136.1006572..5346600..28935984..154692048...835671396

.68.4624.18496.130152.813824.5427216.35345040.235865752.1547212432.10330674512

Links

R. H. Hardin, Table of n, a(n) for n = 1..763

Example

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

Crossrefs

Column 1 is A006355(n+2)

Column 2 is A206981

Row 1 is A006355(n+2)

Row 2 is A206981

Sequence in context: A208078 A208780 A206987 * A207808 A002086 A039830

Adjacent sequences: A207842 A207843 A207844 * A207846 A207847 A207848

Keyword

nonn,tabl

Author

R. H. Hardin Feb 21 2012

Status

approved