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A224570
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Number of (n+5)X6 0..1 matrices with each 6X6 subblock idempotent
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1
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96608, 18044, 16696, 18868, 22096, 25769, 28708, 33705, 40120, 50747, 67088, 91787, 125249, 171289, 230543, 308919, 413997, 558937, 759651, 1041635, 1432497, 1971637, 2708903, 3714751, 5085273, 6961121, 9533251, 13070447, 17936977
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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) = 2*a(n-1) -2*a(n-2) +2*a(n-3) -a(n-4) +2*a(n-6) -3*a(n-7) +4*a(n-8) -4*a(n-9) +3*a(n-10) -2*a(n-11) -2*a(n-14) +2*a(n-15) -2*a(n-16) +2*a(n-17) -a(n-18) +a(n-19) for n>30
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EXAMPLE
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Some solutions for n=2
..1..1..0..1..0..1....1..0..0..0..0..0....0..0..0..0..0..0....1..1..1..0..1..0
..0..0..0..0..0..0....0..0..1..1..1..0....0..0..0..0..0..0....0..0..0..0..0..0
..0..1..1..0..1..1....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..0..0..0..0..0..0....0..0..1..1..1..0....1..0..0..0..0..1....0..0..0..0..0..0
..0..0..0..0..0..0....0..0..0..0..0..0....1..0..0..0..0..1....0..0..0..0..0..0
..0..0..0..0..0..0....0..0..1..1..1..0....1..0..0..0..0..1....0..0..0..0..1..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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