A038588 - OEIS

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A038588

Sizes of clusters in hexagonal lattice A_2 centered at deep hole.

3, 6, 12, 18, 21, 27, 30, 36, 42, 48, 54, 63, 69, 75, 78, 84, 90, 96, 102, 114, 120, 123, 129, 135, 141, 144, 150, 156, 168, 174, 180, 186, 192, 198, 207, 213, 219, 225, 231, 240, 246, 252, 258, 270, 276, 282 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	COMMENTS	`The hexagonal lattice is the familiar 2-dimensional lattice in which each point has 6 neighbors. This is sometimes called the triangular lattice.`
	LINKS	`G. Nebe and N. J. A. Sloane, Home page for hexagonal (or triangular) lattice A2`
	FORMULA	`unique(A038587).`
	CROSSREFS	`Cf. A005882, A038587.` `Sequence in context: A146952 A038046 A162845 * A111041 A079830 A160744` `Adjacent sequences: A038585 A038586 A038587 * A038589 A038590 A038591`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 17 16:00 EST 2012. Contains 206050 sequences.