OFFSET
1,2
REFERENCES
A. T. Balaban, Enumeration of Cyclic Graphs, pp. 63-105 of A. T. Balaban, ed., Chemical Applications of Graph Theory, Ac. Press, 1976; see p. 92.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
PROG
(nauty/bash) for n in {1..10}; do geng -cqD3 $[2*$n] | planarg -q | multig -ur3; done # Sean A. Irvine, Oct 25 2016
CROSSREFS
KEYWORD
nonn,more
AUTHOR
EXTENSIONS
a(7)-a(11) and title improved by Sean A. Irvine, Oct 25 2016
STATUS
approved