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A265374
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Number of 4Xn arrays containing n copies of 0..4-1 with no equal horizontal, vertical or antidiagonal neighbors and new values introduced sequentially from 0.
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1
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1, 10, 32, 236, 1238, 7968, 49214, 324152, 2143190, 14504394, 99426578, 689852636, 4833447174, 34171252034, 243350167280, 1744518978956, 12578806997916, 91164415152504, 663757426934364, 4852711337116032, 35610643603759148
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..0..1..0..2....0..1..2..1....0..1..2..3....0..1..2..0....0..1..2..0
..3..2..1..3....2..0..3..2....2..3..0..2....2..3..1..3....2..3..1..3
..1..0..2..0....3..2..1..3....1..2..3..1....0..2..0..2....0..2..0..2
..2..3..1..3....0..3..0..1....0..1..0..3....3..1..3..1....1..3..1..3
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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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