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A207182 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 horizontally and 0 1 0 vertically 11
2, 4, 4, 7, 16, 7, 13, 49, 49, 12, 24, 169, 241, 144, 21, 44, 576, 1393, 1171, 441, 37, 81, 1936, 7915, 11227, 5917, 1369, 65, 149, 6561, 44065, 105836, 95299, 30067, 4225, 114, 274, 22201, 248525, 981850, 1507355, 816667, 151981, 12996, 200, 504, 75076 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
...2.....4......7.......13.........24...........44.............81
...4....16.....49......169........576.........1936...........6561
...7....49....241.....1393.......7915........44065.........248525
..12...144...1171....11227.....105836.......981850........9196215
..21...441...5917....95299....1507355.....23471595......368714705
..37..1369..30067...816667...21722593....567046841....14960137403
..65..4225.151981..6951227..310484943..13575513917...600838995529
.114.12996.767377.59040685.4425513760.324280404464.24069606968809
LINKS
EXAMPLE
Some solutions for n=4 k=3
..0..0..1....0..1..0....0..1..1....0..0..1....1..0..0....1..0..0....1..1..1
..0..0..1....1..0..1....0..1..1....0..0..1....0..0..1....1..0..1....1..1..0
..1..1..1....1..0..1....0..1..1....1..0..1....1..0..1....1..0..1....1..0..1
..1..1..0....1..1..0....0..1..1....1..0..0....1..1..1....1..0..1....1..1..1
CROSSREFS
Column 1 is A005251(n+3)
Column 2 is A188501
Row 1 is A000073(n+3)
Row 2 is A085697(n+1)
Row 3 is A207089
Sequence in context: A206936 A206871 A207088 * A206994 A181224 A188567
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Feb 15 2012
STATUS
approved

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Last modified July 20 23:17 EDT 2024. Contains 374461 sequences. (Running on oeis4.)