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A207882
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Number of nX5 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 1 and 1 1 0 vertically
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1
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13, 169, 493, 1360, 4387, 14225, 49586, 175747, 645245, 2403872, 9120677, 34960907, 135357992, 527526895, 2067755087, 8138519992, 32142126101, 127268868773, 504981199930, 2006919956813, 7986355654043, 31813478437106, 126832238503405
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OFFSET
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1,1
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COMMENTS
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Column 5 of A207885
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..210
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FORMULA
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Empirical: a(n) = 10*a(n-1) -10*a(n-2) -192*a(n-3) +523*a(n-4) +1371*a(n-5) -5841*a(n-6) -3846*a(n-7) +32138*a(n-8) -2492*a(n-9) -101383*a(n-10) +45525*a(n-11) +191278*a(n-12) -128400*a(n-13) -213000*a(n-14) +178176*a(n-15) +129368*a(n-16) -132968*a(n-17) -32752*a(n-18) +50112*a(n-19) -1856*a(n-20) -7296*a(n-21) +1536*a(n-22) for n>23
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EXAMPLE
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Some solutions for n=4
..1..1..1..1..0....0..0..1..1..1....0..0..1..1..0....1..0..0..1..1
..1..1..0..0..1....1..0..0..1..0....0..0..1..1..0....1..1..1..0..0
..1..1..1..0..0....0..1..1..1..0....1..1..1..1..0....1..0..0..1..0
..1..1..0..0..1....1..0..0..1..0....0..0..1..1..1....1..1..0..0..1
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CROSSREFS
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Sequence in context: A320459 A207343 A207892 * A207759 A207485 A207266
Adjacent sequences: A207879 A207880 A207881 * A207883 A207884 A207885
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Feb 21 2012
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STATUS
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approved
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