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Search: id:A066406
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| 0, 24, 192, 1248, 7680, 46464, 279552, 1678848, 10076160, 60463104, 362790912, 2176770048, 13060669440, 78364114944, 470184886272, 2821109710848, 16926659051520, 101559955881984, 609359738437632, 3656158436917248
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OFFSET
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1,2
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COMMENT
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Number of orthogonal arrays OA(4,n,2,1).
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REFERENCES
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J.-Z. Zhang, Z.-S. You and Z.-L. Li, Enumeration of binary orthogonal arrays of strength 1, Discrete Math., 239 (2000), 191-198.
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CROSSREFS
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Sequence in context: A143040 A128960 A047057 this_sequence A042114 A123197 A125361
Adjacent sequences: A066403 A066404 A066405 this_sequence A066407 A066408 A066409
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Dec 25 2001
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