OFFSET
3,3
REFERENCES
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
Timothy R. Walsh, Generating nonisomorphic maps without storing them, SIAM J. Algebraic Discrete Methods 4 (1983), no. 2, 161-178.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
EXTENSIONS
a(11) and a(12) from Sean A. Irvine, Mar 30 2017
STATUS
approved