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A084825
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Maximum number of spheres of diameter one that can be packed in a cube of edge length n.
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2
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OFFSET
| 1,2
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COMMENTS
| The next term a(4) is at least 64. From an extrapolation of Dave Boll's numerical results a(4)~=66 and a(5)~=141 are estimated values for the next terms.
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LINKS
| Dave Boll, Optimal Packing of Circles and Spheres
Hugo Pfoertner, Densest Packings of Equal Spheres in a Cube
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EXAMPLE
| a(3)=27 because there is no known better arrangement than the 3*3*3 cubic one that would allow to pack more than 27 spheres into a cube of edge length 3.
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CROSSREFS
| Cf. A084824, A084828, A084617.
Sequence in context: A030293 A030479 A061096 * A193006 A166867 A079712
Adjacent sequences: A084822 A084823 A084824 * A084826 A084827 A084828
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KEYWORD
| hard,more,nonn
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AUTHOR
| Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 12 2003
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EXTENSIONS
| a(4) from Hugo Pfoertner (hugo(AT)pfoertner.org), May 21 2011
Replaced dead link to Dave Boll's web page and added link to visualization web page by Hugo Pfoertner (hugo(AT)pfoertner.org), May 21 2011
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