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A228460
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Number of arrays of maxima of three adjacent elements of some length n+2 0..7 array
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1
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8, 64, 372, 1716, 6812, 25096, 92430, 357510, 1453506, 6026658, 24812574, 100499726, 402014614, 1601790692, 6399288759, 25687363699, 103446743321, 416881245069, 1678284756985, 6747301104293, 27104825271091, 108875206199331
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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) = 8*a(n-1) -28*a(n-2) +56*a(n-3) -42*a(n-4) +168*a(n-6) -48*a(n-7) +195*a(n-8) +340*a(n-9) +154*a(n-10) +408*a(n-11) +432*a(n-12) +276*a(n-13) +338*a(n-14) +268*a(n-15) +149*a(n-16) +118*a(n-17) +71*a(n-18) +28*a(n-19) +14*a(n-20) +6*a(n-21) +a(n-22)
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EXAMPLE
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Some solutions for n=4
..5....7....3....0....7....6....7....2....7....5....2....4....3....4....7....5
..1....1....2....1....6....1....4....1....3....4....2....2....6....0....1....5
..0....0....1....5....2....2....2....1....6....1....0....2....7....0....2....0
..1....4....2....5....7....6....5....6....6....0....6....6....7....6....5....5
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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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