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A218589
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Hilltop maps: number of nX5 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 nX5 array
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1
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25, 895, 28325, 898763, 28543403, 906390787, 28782653703, 913998678577, 29024205558587, 921669292406117, 29267787550042425, 929404283528404253, 29513413706384880845, 937204189864632464075, 29761101248357058984601
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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) = 24*a(n-1) +208*a(n-2) +1118*a(n-3) +2907*a(n-4) +5536*a(n-5) +5083*a(n-6) +5846*a(n-7) -1439*a(n-8) +240*a(n-9) +351*a(n-10) -86*a(n-11) -1083*a(n-12) -56*a(n-13) +5*a(n-14) -238*a(n-15) -15*a(n-18) for n>19
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EXAMPLE
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Some solutions for n=3
..0..1..1..0..0....0..0..0..0..0....1..0..0..1..0....0..0..1..1..0
..0..1..1..1..0....1..1..0..1..1....0..1..1..0..0....0..1..0..1..0
..0..1..1..0..0....0..1..1..0..0....1..1..0..0..1....1..1..0..0..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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