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A251468
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Number of (n+1)X(1+1) 0..5 arrays with every 2X2 subblock summing to a prime
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1
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458, 5896, 75962, 979132, 12620130, 162672044, 2096768998, 27026993956, 348367738690, 4490393194956, 57879565086886, 746055829050468, 9616401051712082, 123953375651230956, 1597717011719440470
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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) +227*a(n-2) -338*a(n-3) -12532*a(n-4) +15916*a(n-5) +236364*a(n-6) -266424*a(n-7) -1149984*a(n-8) +1209600*a(n-9) +414720*a(n-10)
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EXAMPLE
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Some solutions for n=3
..2..5....1..5....1..5....4..5....4..1....4..5....4..2....1..5....4..5....1..1
..3..1....3..4....0..5....3..5....1..1....3..5....1..4....1..4....5..3....1..4
..2..5....2..2....5..1....2..3....1..0....4..5....0..2....4..4....1..2....0..0
..2..2....0..3....3..2....3..3....2..2....4..4....4..1....5..4....4..0....2..0
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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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