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A230573
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Number of 4 X n 0..4 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 5, and upper left element zero.
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1
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0, 0, 0, 32, 2582, 93450, 2541242, 70699812, 1933505188, 52460448298, 1419932825064, 38407842262522, 1038562970267906, 28078745979449558, 759100680221322298, 20521698685121650464, 554783828758730501850
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OFFSET
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1,4
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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..2..3....0..1..0..4....0..1..2..3....0..1..0..4....0..1..2..1
..0..4..4..0....2..3..3..2....0..4..4..0....2..3..2..1....2..3..0..4
..3..2..1..3....4..0..1..0....3..2..1..0....4..0..0..4....4..0..3..0
..1..0..4..3....2..3..4..3....1..3..4..3....1..2..3..2....1..2..1..0
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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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