id:A037187 - OEIS Search Results

Search: id:A037187

Displaying 1-1 of 1 results found.

page 1

Number of ways of placing 2n points on n X n grid so no 3 are in a line (solutions with 180 deg rotational symmetry).

+0
2

0, 0, 0, 1, 0, 2, 10, 7, 7, 13, 30, 33, 82, 61, 283, 189, 282, 328, 594, 675, 2413, 1248, 3968, 2852, 8983 (list; graph; listen)

	OFFSET	`1,6`
	REFERENCES	`A. Flammenkamp, Progress in the no-three-in-line problem, J. Combinat. Theory A 60 (1992), 305-311.` `A. Flammenkamp, Progress in the no-three-in-line problem. II. J. Combin. Theory Ser. A 81 (1998), no. 1, 108-113.`
	LINKS	`A. Flammenkamp, Solutions of the no-three-in-line problem`
	CROSSREFS	`Cf. A000769.` `Sequence in context: A076374 A142954 A082225 this_sequence A166542 A092939 A006610` `Adjacent sequences: A037184 A037185 A037186 this_sequence A037188 A037189 A037190`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`There are published versions of this sequence which incorrectly give 693 instead of 675.`

page 1

Search completed in 0.002 seconds

Last modified November 30 13:13 EST 2009. Contains 167758 sequences.