id:A127404 - OEIS Search Results

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Number of points in a honeycomb net covered by a circular disk of diameter n if the center of the circle is chosen at mid-edge between two grid points.

+0
5

2, 2, 6, 10, 16, 20, 34, 36, 50, 58, 72, 86, 106, 116, 138, 154, 176, 190, 222, 234, 270, 292 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(1)=2 because a disk of diameter 1 centered at the middle of an edge covers the 2 net points bounding this edge.`
	CROSSREFS	`Cf. A127402, A127403, A127405, A127406. The corresponding sequences for the square lattice and hexagonal lattice are A053414 and A053417, respectively.` `Sequence in context: A081728 A080460 A077017 this_sequence A165941 A054227 A054228` `Adjacent sequences: A127401 A127402 A127403 this_sequence A127405 A127406 A127407`
	KEYWORD	`more,nonn`
	AUTHOR	`Hugo Pfoertner (hugo(AT)pfoertner.org), Feb 08 2007`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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