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- From: radcliff@csd4.csd.uwm.edu (David G Radcliffe)
- Newsgroups: rec.puzzles
- Subject: Re: sphere packing
- Date: 28 Jan 1993 02:12:08 GMT
- Organization: UW-Milwaukee Math Department
- Lines: 42
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- References: <C1J2xp.JoB@ms.uky.edu>
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- From the Feb. 1992 issue of Scientific American:
-
- Kissing Numbers
-
- Dimension Lower limit Upper limit
- 1* 2 2
- 2* 6 6
- 3* 12 12
- 4 24 25
- 5 40 46
- 6 72 82
- 7 126 140
- 8* 240 240
- 9 306 380
- 10 500 595
- 11 582 915
- 12 840 1,416
- 13 1,130 2,233
- 14 1,582 3,492
- 15 2,564 5,431
- 16 4,320 8,313
- 17 5,346 12,215
- 18 7,398 17,877
- 19 10,688 25,901
- 20 17,400 37,974
- 21 27,720 56,852
- 22 49,896 86,537
- 23 93,150 128,096
- 24* 196,560 196,560
-
- REFERENCES (from the Sci. Am. article)
-
- The Problem of the Thirteen Spheres. John Leech in Mathematical Gazette,
- Vol. 40, No. 331, pages 22-23; February 1956
- Sphere Packings, Lattics and Groups. John Horton Conway and Neil J. A.
- Sloane. Springer-Verlag, 1988.
- Sphere Packings and Spherical Geometry--Kepler's Conjecture and Beyond,
- preprint. Wu-Yi Hsiang. Center for Pure and Applied Mathematics,
- University of California, Berkeley, July 1991.
- --
- David Radcliffe
- radcliff@csd4.csd.uwm.edu
-