OFFSET
1,12
LINKS
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
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