A208028 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 0 1 vertically

2, 4, 4, 6, 16, 6, 10, 36, 36, 9, 16, 100, 102, 81, 13, 26, 256, 378, 279, 169, 19, 42, 676, 1260, 1377, 741, 361, 28, 68, 1764, 4374, 5895, 4823, 1995, 784, 41, 110, 4624, 14946, 26685, 26845, 17119, 5404, 1681, 60, 178, 12100, 51384, 118179, 158847, 123709

Offset

1,1

Comments

Table starts

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

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

..6...36...102....378....1260.....4374.....14946......51384......176238

..9...81...279...1377....5895....26685....118179.....527913.....2350215

.13..169...741...4823...26845...158847....917293....5349227....31070195

.19..361..1995..17119..123709...955073...7184755...54606513...413322903

.28..784..5404..61292..574560..5788524..56728924..561913408..5542832148

.41.1681.14555.218243.2652823.34901455.445530887.5753550295.73969794325

Links

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

Example

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

Crossrefs

Column 1 is A000930(n+3)

Column 2 is A207170

Row 1 is A006355(n+2)

Row 2 is A206981

Row 3 is A060521

Sequence in context: A207661 A208555 A208420 * A208369 A207717 A208078

Adjacent sequences: A208025 A208026 A208027 * A208029 A208030 A208031

Keyword

nonn,tabl

Author

R. H. Hardin Feb 22 2012

Status

approved