OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, King Graph
Eric Weisstein's World of Mathematics, Maximal Irredundant Set
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Aug 17 2017
EXTENSIONS
a(5) from Eric W. Weisstein, Sep 08 2021
a(6)-a(9) from Christian Sievers, Nov 22 2023
STATUS
approved