A261409 Curvatures in a certain bounded, integral, primitive Soddy sphere packing.

-11, 21, 25, 27, 28, 34, 36, 40, 42, 43, 46, 48, 49, 51, 54, 57, 61, 63, 64, 67, 69, 70, 72, 73, 75, 78, 79, 81, 82, 84, 85

Offset: 1

Author

N. J. A. Sloane, Aug 23 2015

Keywords

• sign
• more

Comments

A three-dimensional Apollonian packing.

Links

• Nicolas Hannachi, Illustration of this packing, showing some of the initial terms [Fig. 2b in Kontorovich (2012), used with permission]
• Nicolas Hannachi, Des cercles tangents et des sphères tangentes
• Alex Kontorovich, The local-global principle for integral Soddy sphere packings, arXiv:1208.5441, 2012.

Crossrefs

Cf. A261410.