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Search: id:A098854
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| A098854 |
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Number of triangle-free self-polar configurations of type (n_3). |
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+0
4
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| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 2, 6, 40, 303
(list; graph; listen)
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OFFSET
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1,18
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REFERENCES
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A. Betten, G. Brinkmann and T. Pisanski, Counting symmetric configurations v_3, Discrete Appl. Math., 99 (2000), 331-338.
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CROSSREFS
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Cf. A001403, A098702, A023994.
Sequence in context: A027161 A081096 A119692 this_sequence A056787 A098852 A120592
Adjacent sequences: A098851 A098852 A098853 this_sequence A098855 A098856 A098857
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KEYWORD
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nonn,hard
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Nov 05 2004
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