id:A119438 - OEIS Search Results

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A119438

Number of sets of points determined by the intersection of a line with an n X n grid of points.

+0
2

1, 2, 11, 30, 79, 166, 343, 586, 1003, 1574, 2407, 3418, 4867, 6630, 9027, 11794, 15203, 19190, 24251, 29906, 36911, 44830, 54071, 64178, 76251, 89574, 105051, 121762, 140751, 161478, 185367, 210906, 240075, 271678, 306635, 343706, 384667 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Each singleton point is determined by all but finitely many of the family of lines passing through that point, and the empty set is determined by any randomly positioned line.`
	FORMULA	`a(n) = A018808(n) + n^2 + 1.`
	CROSSREFS	`Cf. A018808, A119439.` `Sequence in context: A103830 A023664 A023622 this_sequence A094005 A115058 A085041` `Adjacent sequences: A119435 A119436 A119437 this_sequence A119439 A119440 A119441`
	KEYWORD	`nonn`
	AUTHOR	`Frank Adams-Watters (FrankTAW(AT)Netscape.net), May 19 2006`

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Last modified November 30 22:12 EST 2008. Contains 150989 sequences.

AT&T Labs Research