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A098822
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Number of cyclic configurations of type (n_3).
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4
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0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 3, 2, 3, 4, 4, 2, 5, 3
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OFFSET
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1,12
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LINKS
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Table of n, a(n) for n=1..19.
A. Betten, G. Brinkmann and T. Pisanski, Counting symmetric configurations v_3, Discrete Appl. Math., 99 (2000), 331-338.
T. Pisanski, M. Boben, D. MaruĊĦic, A. Orbanic, A. Graovac, The 10-cages and derived configurations, Discrete Math. 275 (2004), 265-276.
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CROSSREFS
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Cf. A001403, A023994.
Sequence in context: A275769 A094365 A272886 * A131597 A077070 A075988
Adjacent sequences: A098819 A098820 A098821 * A098823 A098824 A098825
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KEYWORD
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nonn,hard,more
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AUTHOR
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N. J. A. Sloane, Nov 05 2004
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EXTENSIONS
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a(1)-a(18) from the Betten, Brinkmann and Pisanski article.
a(19) from the Pisanski et al. article.
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STATUS
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approved
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