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A251419
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Dominance number for triangle grid graph TG_n.
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4
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1, 1, 2, 3, 3, 5, 6, 7, 9, 10, 13, 15, 17, 19, 21, 24, 27, 30, 33, 36, 40, 43, 47, 51, 55, 59, 63, 68, 72, 77, 82
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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COMMENTS
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Conjectured to equal floor((n^2 + 7n - 23)/14) for n >= 14. See A251418.
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LINKS
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Table of n, a(n) for n=1..31.
Stan Wagon, Graph Theory Problems from Hexagonal and Traditional Chess, The College Mathematics Journal, Vol. 45, No. 4, September 2014, pp. 278-287
Eric Weisstein's World of Mathematics, Domination Number
Eric Weisstein's World of Mathematics, Triangular Grid Graph
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CROSSREFS
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Cf. A251418.
Sequence in context: A338375 A220838 A236294 * A036410 A008670 A338887
Adjacent sequences: A251416 A251417 A251418 * A251420 A251421 A251422
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KEYWORD
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nonn,more
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AUTHOR
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N. J. A. Sloane, Dec 04 2014
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STATUS
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approved
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