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A232045
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Number of nX6 0..1 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors
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1
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21, 184, 5364, 153562, 4588174, 136134243, 4041385884, 119990644449, 3562337669985, 105762437152368, 3139973158165990, 93222494384394215, 2767677519549496896, 82169423941902553632, 2439523490954376368513
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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) = 21*a(n-1) +314*a(n-2) -1045*a(n-3) -19776*a(n-4) +25231*a(n-5) +515946*a(n-6) -435697*a(n-7) -6637658*a(n-8) +7103608*a(n-9) +30185726*a(n-10) -21604276*a(n-11) -75687442*a(n-12) +24802802*a(n-13) +110712267*a(n-14) -9086579*a(n-15) -102117142*a(n-16) -7051224*a(n-17) +60433119*a(n-18) +10059839*a(n-19) -21510561*a(n-20) -4142240*a(n-21) +4134848*a(n-22) +562752*a(n-23) -331776*a(n-24) for n>26
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EXAMPLE
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Some solutions for n=3
..0..0..0..1..0..0....1..1..1..1..1..1....1..0..0..0..1..0....0..0..0..0..1..1
..0..0..0..0..0..1....0..0..0..1..0..0....0..0..0..0..0..0....1..0..0..1..0..0
..0..1..0..0..0..0....0..0..1..0..0..1....0..1..0..0..0..0....0..0..0..0..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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