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Search: id:A039927
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| A039927 |
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Number of types of maximal mixed orthogonal arrays with n runs. |
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+0
3
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| 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 1, 1, 1, 2, 1, 2, 1, 4, 1, 1, 1
(list; graph; listen)
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OFFSET
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1,12
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COMMENT
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Dual atoms in lattice of parameters of mixed orthogonal arrays with n runs and strength 2.
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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.
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LINKS
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E. M. Rains, N. J. A. Sloane and J. Stufken, The Lattice of N-Run Orthogonal Arrays, J. Stat. Planning Inference, 102 (2002), 477-500 (Abstract, pdf, ps)
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CROSSREFS
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Cf. A039930, A039931.
Adjacent sequences: A039924 A039925 A039926 this_sequence A039928 A039929 A039930
Sequence in context: A056623 A038025 A079982 this_sequence A073802 A132157 A103163
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KEYWORD
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nonn,nice
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AUTHOR
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njas
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EXTENSIONS
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a(24) is the first unknown term.
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