OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Total Dominating Set
Eric Weisstein's World of Mathematics, Triangular Grid Graph
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Apr 20 2018
EXTENSIONS
a(7)-a(10) from Andrew Howroyd, Apr 20 2018
STATUS
approved