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A208713
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Number of 6Xn 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors
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1
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32, 2048, 67228, 2587924, 96373248, 3613193828, 135288700496, 5066922301172, 189760457060980, 7106753308593540, 266155856593675476, 9967837469474701148, 373306752240786865244, 13980758919336720329676, 523595189388352085042024
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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) = 33*a(n-1) +263*a(n-2) -3223*a(n-3) -18036*a(n-4) +125510*a(n-5) +521961*a(n-6) -2559903*a(n-7) -7083315*a(n-8) +29279065*a(n-9) +41849338*a(n-10) -177571622*a(n-11) -69714760*a(n-12) +472051228*a(n-13) -17024841*a(n-14) -616904041*a(n-15) +139939476*a(n-16) +429455960*a(n-17) -134077368*a(n-18) -166807014*a(n-19) +56749363*a(n-20) +37221787*a(n-21) -12479641*a(n-22) -4662939*a(n-23) +1470709*a(n-24) +288889*a(n-25) -88672*a(n-26) -5330*a(n-27) +2180*a(n-28) -112*a(n-29) for n>33
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EXAMPLE
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Some solutions for n=4
..0..1..0..1....0..1..1..1....0..0..0..0....0..1..1..0....0..0..0..1
..0..0..1..0....1..0..1..1....0..1..0..1....1..0..1..1....0..1..0..0
..1..1..1..0....1..1..0..1....0..1..1..0....0..1..0..1....1..1..0..0
..0..1..1..0....1..1..0..1....1..0..0..1....0..0..1..1....0..0..1..1
..1..0..0..1....0..1..1..0....1..0..0..1....1..0..0..1....0..1..0..1
..1..0..1..1....0..0..1..1....0..1..1..1....0..1..1..1....1..0..1..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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