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A057560
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Weakly distance-regular digraphs on n nodes (excluding distance-regular graphs).
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3
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0, 0, 1, 2, 1, 6, 2, 12, 6, 5, 2, 34, 2, 9, 19, 44, 1, 46, 3, 31, 17
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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REFERENCES
| Akihide Hanaki and Izumi Miyamoto, Classification of primitive association schemes of order up to 22, Kyushu J. Math., 54 (2000), 81-86.
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LINKS
| A. Hanaki and I. Miyamoto, Classification of association schemes with small vertices
Y. Suga, Association schemes with up to 15 vertices
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CROSSREFS
| Cf. A057495, A057498, A057499.
Sequence in context: A071883 A099304 A064680 * A085592 A174421 A089849
Adjacent sequences: A057557 A057558 A057559 * A057561 A057562 A057563
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KEYWORD
| nonn,nice
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Oct 01 2000
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