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A279657
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T(n,k) = Number of n X k 0..2 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
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11
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0, 1, 0, 0, 3, 0, 3, 27, 24, 0, 6, 254, 734, 232, 0, 24, 2301, 19986, 20448, 2232, 0, 72, 19053, 498424, 1546164, 549608, 20880, 0, 232, 149696, 11256083, 104452983, 113887852, 14309072, 190656, 0, 720, 1124969, 239891281, 6415919752
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OFFSET
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1,5
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COMMENTS
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Table starts
.0.......1..........0..............3..................6....................24
.0.......3.........27............254...............2301.................19053
.0......24........734..........19986.............498424..............11256083
.0.....232......20448........1546164..........104452983............6415919752
.0....2232.....549608......113887852........20868369045.........3484404510555
.0...20880...14309072.....8077041000......4019412007893......1824673552805793
.0..190656..362942080...556408163556....752482408442895....928920011450982106
.0.1707264.9010004672.37457887289336.137719420200247895.462385405050721564618
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LINKS
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FORMULA
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Empirical for column k:
k=1: a(n) = a(n-1).
k=2: [order 6] for n>7.
k=3: [order 9] for n>10.
k=4: [order 24] for n>25.
k=5: [order 42] for n>43.
Empirical for row n:
n=1: a(n) = 6*a(n-1) -6*a(n-2) -16*a(n-3) +12*a(n-4) +24*a(n-5) +8*a(n-6) for n>8.
n=2: [order 13].
n=3: [order 51] for n>53.
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EXAMPLE
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Some solutions for n=3, k=4
..0..0..0..1. .0..0..1..2. .0..0..0..1. .0..0..1..2. .0..1..0..2
..2..1..1..0. .0..1..2..2. .0..2..2..0. .0..1..2..0. .2..1..1..0
..1..0..1..2. .2..1..0..2. .0..0..2..1. .2..0..2..1. .1..2..0..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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