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, May 14 2018
EXTENSIONS
a(7)-a(19) from Andrew Howroyd, May 19 2018
STATUS
approved