OFFSET
1,1
COMMENTS
Counts do not include the null graph.
LINKS
Eric Weisstein's World of Mathematics, Graph Minor
Eric Weisstein's World of Mathematics, Ladder Graph
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Apr 30 2022
EXTENSIONS
a(8) from Eric W. Weisstein, Jul 27 2023
STATUS
approved