A208069 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 1 vertically.

2, 4, 4, 6, 16, 6, 10, 36, 36, 9, 16, 100, 72, 81, 12, 26, 256, 240, 144, 144, 16, 42, 676, 704, 576, 216, 256, 20, 68, 1764, 2080, 1936, 1008, 324, 400, 25, 110, 4624, 6216, 6400, 3696, 1764, 432, 625, 30, 178, 12100, 18496, 21904, 12960, 7056, 2688, 576, 900, 36

Offset: 1

Author

R. H. Hardin Feb 23 2012

Keywords

• nonn
• tabl

Comments

Table starts

..2...4...6...10....16....26.....42......68.....110......178.......288

..4..16..36..100...256...676...1764....4624...12100....31684.....82944

..6..36..72..240...704..2080...6216...18496...55000...163760....487296

..9..81.144..576..1936..6400..21904...73984..250000...846400...2862864

.12.144.216.1008..3696.12960..48840..179520..657000..2423280...8913456

.16.256.324.1764..7056.26244.108900..435600.1726596..6937956..27751824

.20.400.432.2688.11424.44064.198000..844800.3542544.15213984..64859616

.25.625.576.4096.18496.73984.360000.1638400.7268416.33362176.151585344

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..766

Crossrefs

Column 1 is A002620(n+2)

Column 2 is A030179(n+2)

Row 1 is A006355(n+2)

Row 2 is A206981

Row 3 is A207840

Row 4 is A207924