OFFSET
4,1
LINKS
Eric Weisstein's World of Mathematics, Graceful Labeling
Eric Weisstein's World of Mathematics, Wheel Graph
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Apr 01 2020
EXTENSIONS
a(10) = 66312 from Eric W. Weisstein, Jun 13 2020
a(11) from Pontus von Brömssen, Jul 26 2020
STATUS
approved