A007402 - OEIS

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A007402

No-3-in-line problem for equilateral triangle array of side n.
(Formerly M0123)

1, 1, 2, 1, 2, 15, 1, 5, 7, 971, 20, 276 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,3`
	REFERENCES	`R. H. Buchholz, personal communication.` `N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).`
	LINKS	`Table of n, a(n) for n=1..12.`
	CROSSREFS	`Sequence in context: A153908 A048296 A016542 * A058260 A202410 A115507` `Adjacent sequences: A007399 A007400 A007401 * A007403 A007404 A007405`
	KEYWORD	`nonn,nice`
	AUTHOR	`N. J. A. Sloane, Mira Bernstein`
	STATUS	`approved`

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Last modified May 21 16:16 EDT 2013. Contains 225504 sequences.