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A130145
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Number of nonisomorphic orthogonal arrays OA(8*n+4,4,2,2).
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0
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1, 3, 7, 15, 28, 48, 79, 123, 184, 268, 379, 523, 709, 943, 1234, 1594, 2032, 2560, 3194, 3946, 4832, 5872, 7082, 8482, 10097
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OFFSET
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1,2
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COMMENTS
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LINKS
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FORMULA
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Empirical g.f.: x / ((x-1)^6*(x+1)*(x^2+x+1)^2). - Colin Barker, Aug 01 2013
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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