OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Total Domination Number
Eric Weisstein's World of Mathematics, Triangular Grid Graph
FORMULA
a(n) ~ n^2/10. - Andrew Howroyd, May 20 2018
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Apr 08 2018
EXTENSIONS
a(11)-a(15) from Andrew Howroyd, Apr 18 2018
a(16)-a(17) from Eric W. Weisstein, Apr 18 2018
a(18) from Eric W. Weisstein, Apr 20 2018
a(19) from Andrew Howroyd, May 19 2018
a(20)-a(24) from Eric W. Weisstein, Sep 22-23 2021
STATUS
approved