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A224575
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Number of (n+5) X 11 0..1 matrices with each 6 X 6 subblock idempotent.
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1
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25769, 7386, 7884, 8714, 9480, 10086, 10561, 12373, 15413, 19404, 24072, 29230, 34734, 41919, 52000, 65945, 84434, 107959, 136853, 172795, 218668, 278353, 356397, 457838, 588032, 754025, 965735, 1236991, 1586155, 2036626, 2617144, 3363506
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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) = 3*a(n-1) -3*a(n-2) +a(n-3) +2*a(n-6) -5*a(n-7) +4*a(n-8) -a(n-9) -a(n-12) +2*a(n-13) -a(n-14), for n>18.
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EXAMPLE
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Some solutions for n=2:
..1..1..1..1..1..0..0..0..0..0..0....0..1..0..0..0..0..0..0..0..0..0
..0..0..0..0..0..0..0..0..0..0..0....0..1..0..0..0..0..0..0..0..0..0
..0..0..0..0..0..0..0..0..0..0..1....0..1..0..0..0..0..0..0..0..0..1
..0..0..0..0..0..0..0..0..0..0..0....0..1..0..0..0..0..0..0..0..0..1
..0..0..0..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0..0..0..1
..0..0..0..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..0..0..0..1
..0..0..0..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..0..0..0..1
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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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