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A183889
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Number of arrangements of n+3 numbers in 0..6 with each number being the sum mod 7 of three others
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1
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1, 1, 32821, 542557, 4978219, 38280865, 277198249, 1964161189, 13808869207, 96809981737, 678032111797, 4747103957005, 33231843226435, 232627950507697, 1628407600271233, 11398881253796341, 79792234154371567, 558545790385795897
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OFFSET
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1,3
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3
..5....3....6....1....6....5....2....2....2....3....5....0....3....6....2....5
..0....5....3....0....5....6....1....4....0....4....4....4....2....5....1....0
..1....5....5....1....0....5....3....6....4....0....5....0....2....6....0....5
..3....1....2....4....6....3....6....2....6....5....0....6....5....0....2....5
..0....0....0....0....3....0....5....1....1....5....0....2....0....2....6....4
..2....1....1....2....4....3....4....1....4....1....4....3....1....3....4....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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