cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-4 of 4 results.

A302401 Total domination number of the n X n king graph.

Original entry on oeis.org

2, 2, 4, 5, 8, 9, 12, 15, 18, 21, 24, 29, 32, 38, 43, 48, 53, 60, 66, 72, 79
Offset: 2

Views

Author

Eric W. Weisstein, Apr 07 2018

Keywords

Crossrefs

Main diagonal of A303378.
Cf. A303156.

Formula

a(n) ~ n^2/7. - Andrew Howroyd, Apr 22 2018

Extensions

a(17)-a(18) from Andrew Howroyd, Apr 22 2018
a(19)-a(20) from Eric W. Weisstein, Sep 09 2021
a(21) from Eric W. Weisstein, Sep 12 2021
a(22) from Eric W. Weisstein, Sep 15 2021

A303335 Array read by antidiagonals: T(m,n) is the number of minimum total dominating sets in the m X n king graph.

Original entry on oeis.org

0, 1, 1, 2, 6, 2, 1, 9, 9, 1, 1, 4, 8, 4, 1, 4, 8, 1, 1, 8, 4, 3, 89, 3, 35, 3, 89, 3, 1, 56, 76, 9, 9, 76, 56, 1, 2, 16, 17, 1, 1, 1, 17, 16, 2, 9, 64, 1, 130, 9, 9, 130, 1, 64, 9, 4, 780, 6, 16, 60, 8684, 60, 16, 6, 780, 4, 1, 304, 229, 1, 89, 493, 493, 89, 1, 229, 304, 1
Offset: 1

Views

Author

Andrew Howroyd, Apr 21 2018

Keywords

Comments

The minimum size of a total dominating set is the total domination number A303378(m, n).

Examples

			Table begins:
=========================================
m\n| 1  2  3   4  5    6   7   8    9
---+-------------------------------------
1  | 0  1  2   1  1    4   3   1    2 ...
2  | 1  6  9   4  8   89  56  16   64 ...
3  | 2  9  8   1  3   76  17   1    6 ...
4  | 1  4  1  35  9    1 130  16    1 ...
5  | 1  8  3   9  1    9  60  89   45 ...
6  | 4 89 76   1  9 8684 493   1   50 ...
7  | 3 56 17 130 60  493 208  40   32 ...
8  | 1 16  1  16 89    1  40 604    1 ...
9  | 2 64  6   1 45   50  32   1 1192 ...
...
		

Crossrefs

Rows 1..2 are A302654, A350817.
Main diagonal is A303156.

A303116 Number of total dominating sets in the n X n king graph.

Original entry on oeis.org

0, 11, 353, 35458, 16322279, 30158547693, 217221533288240, 6223220939472363571, 709791800918008570287847, 321673400252458591521699180612, 579292884621843116328602359172702605, 4146239141804826663870561644604700888044071
Offset: 1

Views

Author

Andrew Howroyd, Apr 18 2018

Keywords

Crossrefs

Main diagonal of A303114.

A332391 Number of minimal total dominating sets in the n X n king graph.

Original entry on oeis.org

0, 6, 20, 141, 7770, 204372, 16260853, 4570906041, 1437642613959, 1151580438927120
Offset: 1

Views

Author

Andrew Howroyd, Feb 10 2020

Keywords

Crossrefs

Main diagonal of A332390.

Extensions

a(9)-a(10) from Christian Sievers, Dec 02 2023
Showing 1-4 of 4 results.