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A251533 Clique covering number of obtuse knights graph N_n. 0
1, 3, 6, 7, 7, 9, 15, 18, 21, 21, 27, 31, 37, 42, 44, 49, 56, 63, 70 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

Stan Wagon, Graph Theory Problems from Hexagonal and Traditional Chess, The College Mathematics Journal, Vol. 45, No. 4, September 2014, pp. 278-287

CROSSREFS

Sequence in context: A188883 A152083 A251532 * A295849 A003458 A133339

Adjacent sequences:  A251530 A251531 A251532 * A251534 A251535 A251536

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Dec 04 2014

STATUS

approved

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Last modified May 26 16:47 EDT 2019. Contains 323597 sequences. (Running on oeis4.)