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A200084
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Number of 0..n arrays x(0..5) of 6 elements with zero 4th differences
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1
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2, 7, 14, 27, 58, 111, 182, 279, 404, 617, 872, 1199, 1580, 2045, 2678, 3437, 4300, 5305, 6430, 7903, 9530, 11389, 13420, 15707, 18460, 21537, 24870, 28553, 32518, 37265, 42342, 47905, 53828, 60267, 67620, 75589, 84034, 93127, 102734, 113729, 125300
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OFFSET
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1,1
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COMMENTS
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LINKS
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FORMULA
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Empirical: a(n) = a(n-1) +a(n-2) -a(n-3) +2*a(n-10) -2*a(n-11) -2*a(n-12) +2*a(n-13) +a(n-15) -a(n-16) -a(n-17) +a(n-18) -a(n-20) +a(n-21) +a(n-22) -a(n-23) -2*a(n-25) +2*a(n-26) +2*a(n-27) -2*a(n-28) +a(n-35) -a(n-36) -a(n-37) +a(n-38)
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EXAMPLE
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Some solutions for n=6
..0....5....6....5....1....4....6....5....4....0....4....4....4....6....5....0
..6....3....5....5....1....4....6....3....4....4....6....2....0....3....1....3
..6....3....5....3....1....5....6....1....2....6....4....2....1....2....0....5
..3....4....5....1....1....6....6....0....0....6....1....3....4....2....1....6
..0....5....4....1....1....6....6....1....0....4....0....4....6....2....3....6
..0....5....1....5....1....4....6....5....4....0....4....4....4....1....5....5
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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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