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A206659
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T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..1 introduced in row major order
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9
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102, 390, 390, 1517, 1769, 1517, 5805, 8374, 8374, 5805, 22346, 39928, 50529, 39928, 22346, 86251, 190577, 305347, 305347, 190577, 86251, 332419, 910169, 1839784, 2324028, 1839784, 910169, 332419, 1281181, 4345011, 11172263, 17859249
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OFFSET
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1,1
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COMMENTS
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Table starts
.....102......390......1517.......5805........22346.........86251
.....390.....1769......8374......39928.......190577........910169
....1517.....8374.....50529.....305347......1839784......11172263
....5805....39928....305347....2324028.....17859249.....138177925
...22346...190577...1839784...17859249....175401820....1731487818
...86251...910169..11172263..138177925...1731487818...21966491761
..332419..4345011..67724531.1063970081..17082121522..278034719471
.1281181.20745372.410177144.8203665888.168628106667.3516414118117
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LINKS
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EXAMPLE
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Some solutions for n=4 k=3
..0..1..1..0..0....0..1..1..0..0....0..0..1..0..1....0..1..0..1..1
..1..1..1..0..1....0..0..1..1..1....1..1..1..0..0....1..1..1..1..1
..0..1..0..0..0....0..0..1..1..0....0..1..1..0..1....0..1..0..0..0
..1..1..0..0..1....1..0..0..0..0....1..1..0..0..0....1..1..0..1..1
..1..1..0..1..1....1..0..0..1..0....1..1..1..1..1....0..0..0..0..1
..0..1..1..1..1....1..1..0..1..1....0..1..0..0..1....0..1..0..1..0
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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