login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A300358 Array read by antidiagonals: T(m,n) = total domination number of the grid graph P_m X P_n. 6

%I #26 Nov 06 2021 09:49:48

%S 1,2,2,2,2,2,2,2,2,2,3,4,3,4,3,4,4,4,4,4,4,4,4,5,6,5,4,4,4,6,6,8,8,6,

%T 6,4,5,6,7,8,9,8,7,6,5,6,6,8,10,10,10,10,8,6,6,6,8,9,12,12,12,12,12,9,

%U 8,6,6,8,10,12,14,14,14,14,12,10,8,6,7,8,11,14,15,16,15,16,15,14,11,8,7

%N Array read by antidiagonals: T(m,n) = total domination number of the grid graph P_m X P_n.

%H Andrew Howroyd, <a href="/A300358/b300358.txt">Table of n, a(n) for n = 1..435</a> (first 29 antidiagonals)

%H Alexandre Talon, <a href="https://arxiv.org/abs/2002.11615">Intensive use of computing resources for dominations in grids and other combinatorial problems</a>, arXiv:2002.11615 [cs.DM], 2020. See Sec. 2.3.2.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/GridGraph.html">Grid Graph</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/TotalDominationNumber.html">Total Domination Number</a>

%e Table begins:

%e =======================================================

%e m\n| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

%e ---+---------------------------------------------------

%e 1 | 1 2 2 2 3 4 4 4 5 6 6 6 7 8 8 8 ...

%e 2 | 2 2 2 4 4 4 6 6 6 8 8 8 10 10 10 12 ...

%e 3 | 2 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ...

%e 4 | 2 4 4 6 8 8 10 12 12 14 14 16 18 18 20 20 ...

%e 5 | 3 4 5 8 9 10 12 14 15 16 18 20 21 22 24 26 ...

%e 6 | 4 4 6 8 10 12 14 16 18 20 20 24 24 26 28 30 ...

%e 7 | 4 6 7 10 12 14 15 18 20 22 24 26 27 30 32 34 ...

%e 8 | 4 6 8 12 14 16 18 20 22 24 28 30 32 34 36 38 ...

%e 9 | 5 6 9 12 15 18 20 22 25 28 30 32 35 38 40 42 ...

%e ...

%Y Rows 1..2 are A004524(n+2), A302402.

%Y Main diagonal is A302488.

%Y Cf. A303111, A303118, A303293.

%K nonn,tabl

%O 1,2

%A _Andrew Howroyd_, Apr 20 2018

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 25 01:06 EDT 2024. Contains 371964 sequences. (Running on oeis4.)