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A221319
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Number of nonnegative integer arrays of length n summing to n without equal adjacent values modulo 6
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1
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1, 2, 7, 14, 30, 76, 188, 444, 1071, 2638, 6460, 15756, 38783, 95778, 236270, 584394, 1448972, 3596146, 8935547, 22233108, 55380945, 138076092, 344565415, 860595928, 2151093021, 5380523278, 13467284628, 33729132584, 84523860027, 211927633632
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=9
..0....0....2....2....0....1....1....0....1....1....1....3....0....1....0....2
..1....1....0....1....2....0....2....2....0....0....0....1....1....0....2....3
..0....0....4....2....1....1....0....1....1....2....3....0....0....1....0....0
..2....2....0....0....0....0....1....0....0....1....1....2....2....0....1....1
..3....0....1....2....1....2....2....1....1....0....0....1....1....4....0....0
..0....3....0....0....0....1....1....2....0....3....1....0....0....0....4....2
..1....0....1....1....2....0....0....1....1....0....2....1....4....1....0....0
..0....2....0....0....0....1....2....2....3....2....1....0....0....0....2....1
..2....1....1....1....3....3....0....0....2....0....0....1....1....2....0....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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