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A282859
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Number of nX5 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors.
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1
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24, 251, 2562, 28537, 305430, 3303160, 35681883, 385325426, 4161954773, 44951001482, 485498298665, 5243663988955, 56634643302008, 611687335430349, 6606581342036398, 71354948595558587, 770675234077575658
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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) +61*a(n-2) +358*a(n-3) +1113*a(n-4) +2413*a(n-5) +3379*a(n-6) +1124*a(n-7) -8938*a(n-8) -16081*a(n-9) -6340*a(n-10) +6638*a(n-11) +30086*a(n-12) +282342*a(n-13) -1039675*a(n-14) +1528537*a(n-15) -1806567*a(n-16) +2635369*a(n-17) -2835808*a(n-18) +2024657*a(n-19) -1772432*a(n-20) +1448395*a(n-21) -608689*a(n-22) +411486*a(n-23) -471618*a(n-24) +271632*a(n-25) -126978*a(n-26) +72574*a(n-27) -60803*a(n-28) +33770*a(n-29) +15733*a(n-30) -22027*a(n-31) +9196*a(n-32) -4582*a(n-33) +2225*a(n-34) -616*a(n-35) -99*a(n-36) +251*a(n-37) -83*a(n-38) +23*a(n-39) -32*a(n-40) +5*a(n-41) +a(n-43)
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EXAMPLE
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Some solutions for n=4
..0..0..0..0..0. .1..0..0..1..1. .0..1..0..0..1. .1..0..0..0..1
..1..0..0..1..1. .0..1..0..0..0. .1..0..1..0..0. .0..0..0..0..0
..0..0..0..0..0. .0..0..0..0..0. .0..0..0..1..0. .1..0..0..1..0
..0..1..1..0..0. .1..0..0..0..0. .0..0..1..0..1. .0..1..0..0..0
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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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