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A263912
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Number of (2n+1)X(7+2) 0..1 arrays with each row and column modulo 3 equal to 1, read as a binary number with top and left being the most significant bits.
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1
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2241, 29452071, 699094613961, 19392931688071671, 559629036639216996921, 16310142164609472165404391, 476531066653870544234088649641, 13931367290098694757277662337480791
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OFFSET
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1,1
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COMMENTS
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Column 7 of A263913 (nonzero terms).
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LINKS
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FORMULA
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Empirical: a(n) = 41679*a(n-1) -410712498*a(n-2) +1452478559886*a(n-3) -2336950596975813*a(n-4) +1862617418228921571*a(n-5) -787558392124231703688*a(n-6) +182199417380911916513856*a(n-7) -23215178003601108008066688*a(n-8) +1584533498783486314495355136*a(n-9) -53217577938863645271064461312*a(n-10) +683124888479882769100270927872*a(n-11)
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EXAMPLE
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Some solutions for n=1
..0..1..1..0..1..0..0..1..1....1..1..1..1..1..1..1..1..1
..0..1..1..0..1..0..0..1..1....1..1..1..0..0..0..0..1..1
..1..1..1..1..1..1..1..1..1....1..1..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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