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A208564
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Number of nX5 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or left-upward diagonal neighbors
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1
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41, 3168, 260856, 21758476, 1820627588, 152454784170, 12768454002596, 1069433026366756, 89572151753280992, 7502281578834477922, 628367800932102007424, 52630140708145183027180, 4408137671151078527664476
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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) = 171*a(n-1) -10470*a(n-2) +325569*a(n-3) -5715687*a(n-4) +56148167*a(n-5) -245912801*a(n-6) -484495146*a(n-7) +10078833115*a(n-8) -31788474833*a(n-9) -62614662381*a(n-10) +560437441681*a(n-11) -642115987254*a(n-12) -2499011458897*a(n-13) +6268700558495*a(n-14) +963700261876*a(n-15) -12620524925764*a(n-16) +6372190291752*a(n-17) +1053712106560*a(n-18) -1060563638688*a(n-19) +11585781964416*a(n-20) +5647581956608*a(n-21) -36276070293504*a(n-22) +23488582508544*a(n-23) +1781937340416*a(n-24) -5735198490624*a(n-25) +1426902220800*a(n-26) for n>27
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EXAMPLE
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Some solutions for n=4
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..1....0..1..0..1..2
..1..1..1..1..2....1..2..1..1..1....0..1..1..2..1....2..1..0..1..2
..2..2..2..2..0....2..0..0..2..2....0..1..2..0..0....0..0..2..0..0
..2..1..0..1..1....2..1..1..1..1....0..2..0..1..1....0..1..1..1..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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