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A257059
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Number of length n 1..(n+1) arrays with every leading partial sum divisible by 2 or 3
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1
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1, 4, 18, 81, 1024, 7353, 106056, 1249592, 22143847, 282475249, 8589934592, 133642251792, 3531308221901, 71789886480657, 2171807721018968, 45949729863572161, 2218611106740436992, 53241469411989452625
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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=4
..3....4....2....2....3....3....4....4....4....2....2....3....4....2....3....4
..5....5....2....1....1....3....2....5....4....2....1....1....5....4....5....4
..2....5....2....5....2....3....2....3....1....5....5....4....5....2....4....4
..4....1....4....1....4....1....4....2....3....3....4....1....2....1....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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