This site is supported by donations to The OEIS Foundation.

 Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS". Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A007285 Minimum diameter of an integral set of n points in the plane, not all on a line. (Formerly M3295) 3
 1, 4, 7, 8, 17, 21, 29, 40, 51, 63, 74, 91, 104, 121, 134, 153, 164, 196, 212, 228, 244, 272, 288, 319, 332, 364, 396, 437, 464, 494, 524, 553, 578, 608, 642, 667, 692, 754, 816, 897, 959, 1026, 1066, 1139, 1190, 1248, 1306, 1363 (list; graph; refs; listen; history; text; internal format)
 OFFSET 3,2 COMMENTS An integral set is a set where all distances between points are integers. REFERENCES S. Kurz and A. Wassermann, On the minimum diameter of plane integral point sets, Ars Combinatoria, Vol. 101 (2011), 265-287. N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). LINKS Jason Kimberley from Kurz and Laue, Table of n, a(n) for n = 3..122 H. Harborth, A. Kemnitz and M. Moeller, An upper bound for the minimum diameter of integral plane sets, Discr. Comput. Geom. 9 (1993), 427-432. Sascha Kurz and Reinhard Laue, Bounds for the minimum diameter of integral point sets, arXiv:0804.1296 CROSSREFS Cf. A096872, A096873. Sequence in context: A270216 A237599 A291750 * A225430 A239290 A057464 Adjacent sequences:  A007282 A007283 A007284 * A007286 A007287 A007288 KEYWORD nonn,nice AUTHOR EXTENSIONS More terms from Sascha Kurz, Sep 11 2003 396 from Sascha Kurz, Jul 13 2004 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.