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A075550 Irredundance number for kings graph K(n). 1
1, 1, 1, 3, 4, 4, 8, 9, 9 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..9.

O. Favaron et al., Irredundance and domination in kings graphs, Discrete Math., 262 (2003), 131-147.

Matthew D. Kearse and Peter B. Gibbons, Computational Methods and New Results for Chessboard Problems, Australasian Journal of Combinatorics 23 (2001), 253-284.

CROSSREFS

Sequence in context: A240875 A127735 A330249 * A292729 A328989 A137529

Adjacent sequences:  A075547 A075548 A075549 * A075551 A075552 A075553

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Oct 16 2002

STATUS

approved

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Last modified July 8 08:08 EDT 2020. Contains 335520 sequences. (Running on oeis4.)