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A205994
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Number of (n+1)X5 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two, and every 2X2 determinant nonzero
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1
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1184, 14866, 189430, 2437024, 31326018, 403768668, 5195655486, 66947088104, 861764789094, 11101218786716, 142925095236492, 1840894346159884, 23703493987332650, 305280014387629340, 3931041030713379578
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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) = 9*a(n-1) +129*a(n-2) -959*a(n-3) -2642*a(n-4) +23760*a(n-5) +29110*a(n-6) -294329*a(n-7) -233474*a(n-8) +2089321*a(n-9) +1217510*a(n-10) -7615126*a(n-11) -4368220*a(n-12) +12862612*a(n-13) -84886*a(n-14) -22987038*a(n-15) +4272374*a(n-16) +30922371*a(n-17) +17506373*a(n-18) +7832373*a(n-19) -2220854*a(n-20) -17869842*a(n-21) -12972492*a(n-22) -5160865*a(n-23) -3810944*a(n-24) +4001127*a(n-25) +3976405*a(n-26) -1150220*a(n-27) -615736*a(n-28) +213944*a(n-29) +46224*a(n-30) +19196*a(n-31) +18136*a(n-32) -1136*a(n-33) -1296*a(n-34) -128*a(n-35) +64*a(n-36)
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EXAMPLE
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Some solutions for n=4
..0..1..2..2..1....2..1..2..2..0....2..1..0..2..0....0..2..0..1..1
..1..2..1..0..2....0..2..1..0..1....0..2..1..0..2....2..0..2..0..2
..1..0..2..1..0....2..0..2..1..0....1..0..2..1..0....2..1..0..1..0
..0..1..0..2..1....1..1..0..2..1....2..1..0..2..1....1..2..1..2..1
..1..2..1..0..2....0..2..1..0..2....0..2..1..0..2....0..1..2..0..2
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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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