

A302486


Total domination number of the ntriangular grid graph.


2



2, 2, 4, 5, 6, 8, 10, 12, 15, 17, 20, 23, 26, 30, 33, 36, 40, 45, 49
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..19.
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

Cf. A251419, A303049.
Sequence in context: A056902 A089676 A230059 * A266745 A062436 A238571
Adjacent sequences: A302483 A302484 A302485 * A302487 A302488 A302489


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


STATUS

approved



