OFFSET
1,4
COMMENTS
By convention, the singleton graph is generally considered to be both regular (cf. A005176) and Hamiltonian (cf. A003216). - Eric W. Weisstein, Oct 30 2017
LINKS
F. Hüffner, tinygraph, software for generating integer sequences based on graph properties.
Peter Steinbach, Field Guide to Simple Graphs, Volume 1, Part 17 (For Volumes 1, 2, 3, 4 of this book see A000088, A008406, A000055, A000664, respectively.)
Eric Weisstein's World of Mathematics, Hamiltonian Graph
Eric Weisstein's World of Mathematics, LCF Notation
Eric Weisstein's World of Mathematics, Regular Graph
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Mar 19 2017
EXTENSIONS
a(11)-a(14) added using tinygraph by Falk Hüffner, Mar 31 2017
a(1) changed from 0 to 1 by Eric W. Weisstein, Oct 30 2017
STATUS
approved