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A222908
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Number of 3Xn 0..3 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order
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1
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5, 14, 45, 373, 1202, 18981, 82020, 1506810, 6857704, 129852811, 597088326, 11405469595, 52673539459, 1011491590878, 4687412959525, 90358383040770, 419948850379586, 8119819516703235, 37831903319054460, 733292643562816976
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3
..0..0..1....0..1..0....0..0..1....0..0..0....0..0..1....0..0..0....0..0..0
..0..1..1....0..0..0....0..0..0....0..0..0....0..2..2....0..0..0....1..2..2
..1..1..1....0..0..0....0..0..0....0..0..1....2..2..2....0..1..1....2..2..2
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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