|
|
A098822
|
|
Number of cyclic configurations of type (n_3).
|
|
4
|
|
|
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 3, 2, 3, 4, 4, 2, 5, 3
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,12
|
|
LINKS
|
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.
|
|
CROSSREFS
|
Cf. A001403, A023994.
Sequence in context: A275769 A094365 A272886 * A131597 A077070 A075988
Adjacent sequences: A098819 A098820 A098821 * A098823 A098824 A098825
|
|
KEYWORD
|
nonn,hard,more
|
|
AUTHOR
|
N. J. A. Sloane, Nov 05 2004
|
|
EXTENSIONS
|
a(1)-a(18) from the Betten, Brinkmann and Pisanski article.
a(19) from the Pisanski et al. article.
|
|
STATUS
|
approved
|
|
|
|