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A188695 T(n,k)=Number of nXk binary arrays without the pattern 0 1 0 diagonally, vertically, antidiagonally or horizontally 8
2, 4, 4, 7, 16, 7, 12, 49, 49, 12, 21, 144, 218, 144, 21, 37, 441, 857, 857, 441, 37, 65, 1369, 3609, 4008, 3609, 1369, 65, 114, 4225, 15942, 20662, 20662, 15942, 4225, 114, 200, 12996, 69852, 120839, 139307, 120839, 69852, 12996, 200, 351, 40000, 302053 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
...2......4.......7........12.........21...........37.............65
...4.....16......49.......144........441.........1369...........4225
...7.....49.....218.......857.......3609........15942..........69852
..12....144.....857......4008......20662.......120839.........708519
..21....441....3609.....20662.....139307......1181340........9908740
..37...1369...15942....120839....1181340.....15547072......196218615
..65...4225...69852....708519....9908740....196218615.....3647921173
.114..12996..302053...3984317...75877068...2192313402....58576420100
.200..40000.1305379..22096751..567455273..24054473035...923989193674
.351.123201.5658937.123685638.4366586742.276006561506.15401563228402
LINKS
EXAMPLE
Some solutions for 6X4
..0..0..0..0....0..0..0..1....1..1..0..1....1..1..1..0....0..1..1..1
..1..0..0..0....1..1..0..0....0..0..0..0....1..0..0..0....0..0..1..1
..1..0..0..0....1..1..1..0....1..0..0..1....1..0..0..0....0..0..1..1
..0..0..0..0....1..1..1..1....1..0..0..1....1..0..0..0....1..0..0..1
..1..0..0..0....1..1..0..1....1..0..1..1....1..0..0..0....1..0..0..1
..1..0..0..0....1..1..0..0....1..0..1..1....1..0..0..1....1..0..0..0
CROSSREFS
Column 1 is A005251(n+3)
Column 2 is A188501
Sequence in context: A188523 A206785 A188763 * A188508 A207000 A206883
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Apr 08 2011
STATUS
approved

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Last modified June 14 08:28 EDT 2024. Contains 373393 sequences. (Running on oeis4.)