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A188567 T(n,k)=Number of nXk binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally 8
2, 4, 4, 7, 16, 7, 13, 49, 49, 13, 24, 169, 247, 169, 24, 44, 576, 1383, 1383, 576, 44, 81, 1936, 7722, 13306, 7722, 1936, 81, 149, 6561, 42712, 127951, 127951, 42712, 6561, 149, 274, 22201, 237116, 1204078, 2109386, 1204078, 237116, 22201, 274, 504, 75076 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
...2......4........7.........13............24..............44
...4.....16.......49........169...........576............1936
...7.....49......247.......1383..........7722...........42712
..13....169.....1383......13306........127951.........1204078
..24....576.....7722.....127951.......2109386........33878337
..44...1936....42712....1204078......33878337.......924245906
..81...6561...237116...11433452.....550371695.....25507294349
.149..22201..1315783..108485757....8927734479....703601341153
.274..75076..7300042.1028265705..144690439154..19385833712450
.504.254016.40505756.9752393774.2346488899945.534376376148754
LINKS
EXAMPLE
Some solutions for 5X3
..1..1..0....0..0..0....1..0..1....1..1..0....0..0..0....0..1..0....0..0..0
..1..0..1....0..1..1....0..1..1....1..0..0....0..1..0....1..0..1....0..0..1
..0..1..1....0..1..0....0..1..0....0..1..0....0..1..0....0..0..1....0..0..1
..0..0..0....0..0..1....1..0..1....0..0..0....0..0..0....1..0..0....1..1..0
..0..1..1....1..0..1....0..1..0....1..0..1....0..1..1....0..1..1....1..1..0
CROSSREFS
Column 1 is A000073(n+3)
Column 2 is A085697(n+1)
Sequence in context: A207182 A206994 A181224 * A262274 A223669 A223680
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Apr 04 2011
STATUS
approved

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Last modified July 19 16:24 EDT 2024. Contains 374410 sequences. (Running on oeis4.)