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A230790
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Number of (n+3)X(2+3) 0..3 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero
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1
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1024, 32912, 2096704, 84019184, 3164737536, 128788339184, 5240912804416, 210666866507312, 8485631595430144, 342396531530004720, 13806626781819210304, 556634631310631742384, 22444891375792627713024
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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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FORMULA
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Empirical recurrence of order 64 (see link above)
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EXAMPLE
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Some solutions for n=1
..0..2..2..2..2....0..3..2..1..2....0..3..0..1..0....0..2..0..0..2
..3..1..3..3..1....2..1..0..3..2....2..1..0..1..2....1..1..3..3..1
..2..0..0..2..2....0..3..2..3..0....0..3..2..3..0....2..0..0..2..2
..3..3..1..3..1....2..3..2..1..2....2..3..2..1..2....3..3..3..3..1
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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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