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Search: id:A048885
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| A048885 |
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Number of nonisomorphic orthogonal arrays OA(4n,4n-1,2,2). |
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+0
3
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OFFSET
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1,4
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REFERENCES
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A. S. Hedayat, N. J. A. Sloane and J. Stufken, Orthogonal Arrays, Springer-Verlag, NY, 1999, see Table 7.37 page 165.
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CROSSREFS
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Cf. A007299.
Sequence in context: A007299 A109254 A145985 this_sequence A002208 A100653 A121021
Adjacent sequences: A048882 A048883 A048884 this_sequence A048886 A048887 A048888
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KEYWORD
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nonn,nice,hard
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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a(7) computed by N. J. A. Sloane (njas(AT)research.att.com).
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