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A225020
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Number of (n+1)X2 0..2 matrices with each 2X2 permanent equal
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1
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81, 253, 759, 2653, 9273, 34545, 130067, 502563, 1957855, 7707477, 30479641, 121049341, 481805459, 1921111559, 7667874767, 30628405561, 122397615337, 489285404561, 1956323203363, 7823125185531, 31286692332191, 125131311950285
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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) = 6*a(n-1) +8*a(n-2) -89*a(n-3) -3*a(n-4) +522*a(n-5) -118*a(n-6) -1489*a(n-7) +342*a(n-8) +2002*a(n-9) -380*a(n-10) -992*a(n-11) +192*a(n-12)
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EXAMPLE
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Some solutions for n=2
..1..0....1..1....0..2....0..2....2..0....1..0....2..2....2..2....2..1....2..0
..0..0....1..0....1..2....2..0....1..1....0..2....0..2....1..0....0..1....0..0
..1..1....1..1....1..0....2..2....2..0....1..1....2..0....0..2....2..0....1..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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