A174423 Number of "iterative" n x n adjacency matrices of sphere packings in R^3.

1, 1, 1, 1, 1, 3, 26, 437, 13823, 750226

Offset

1,6

Comments

See reference for precise definition.

Links

Table of n, a(n) for n=1..10.

Natalie Arkus, Vinothan N. Manoharan, Michael P. Brenner. Deriving Finite Sphere Packings, Nov 24, 2010.

Crossrefs

Cf. A173715, A174424.

Sequence in context: A305113 A251664 A182958 * A321183 A274778 A049088

Adjacent sequences: A174420 A174421 A174422 * A174424 A174425 A174426

Keyword

nonn

Author

N. J. A. Sloane, Nov 27 2010

Status

approved