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A193368
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Number of nXnXn triangular 0..3 arrays with no element equal to the product mod 4 of any two neighbors
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1
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4, 41, 358, 3136, 52618, 2219896, 180648122, 26186281114, 6817597592917, 3174584242587777, 2648093971605024584, 3954815147871186523991, 10576607847561078075619087, 50648631487657145850324740233
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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
.....2........2........2........3........2........1........2........2
....1.0......3.3......1.1......3.0......3.3......0.3......3.3......3.0
...2.3.1....3.0.3....3.0.3....3.3.2....3.3.2....2.1.2....2.3.2....3.3.3
..3.0.1.0..3.2.3.3..0.2.1.2..2.0.3.0..3.2.3.3..0.1.0.1..3.3.3.0..3.3.2.0
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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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