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A193183
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Number of nXnXn triangular 0..3 arrays with no element equal to the sum mod 4 of any two neighbors
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1
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4, 36, 95, 1169, 33801, 2107545, 268584665, 68722397483, 35184451704151, 36028800045063009, 73786976454230149101, 302231454915324617869969, 2475880078571947551781268217, 40564819207303508564612061601737
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OFFSET
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1,1
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LINKS
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EXAMPLE
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Some solutions for 4X4X4
.....3........1........1........3........3........3........3........2
....3.3......2.2......3.3......1.3......3.3......1.1......3.1......2.2
...1.1.3....2.3.2....3.1.3....3.1.3....3.1.1....1.1.1....3.3.1....1.2.2
..3.1.1.1..2.2.2.2..3.1.1.1..3.3.1.3..1.3.3.1..3.1.1.3..1.1.3.3..2.2.2.2
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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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