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A302486 Total domination number of the n-triangular grid graph. 3
2, 2, 4, 5, 6, 8, 10, 12, 15, 17, 20, 23, 26, 30, 33, 36, 40, 45, 49, 54, 58, 63, 69, 74 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..24.

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: A334653 A230059 A340445 * A266745 A062436 A342514

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

a(20)-a(24) from Eric W. Weisstein, Sep 22-23 2021

STATUS

approved

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Last modified January 22 15:13 EST 2022. Contains 350481 sequences. (Running on oeis4.)