A008524 Coordination sequence for 4-dimensional lonsdaleite (or wurtzite).

1, 5, 20, 53, 116, 213, 360, 561, 832, 1171, 1600

Offset

0,2

References

M. O'Keeffe, N-dimensional diamond, sodalite and rare sphere packings, Acta Cryst., A 47 (1991), 749-753.

Links

Table of n, a(n) for n=0..10.

M. O'Keeffe, N-dimensional diamond, sodalite and rare sphere packings, Acta Cryst., A 47 (1991), 749-753.

Crossrefs

For 3-D see A008264. Cf. A008525 etc.

Sequence in context: A173034 A006010 A270334 * A055383 A090133 A351931

Adjacent sequences: A008521 A008522 A008523 * A008525 A008526 A008527

Keyword

nonn,more

Author

N. J. A. Sloane.

Extensions

Missing a(1)=5 inserted by Sean A. Irvine, Oct 17 2020

Status

approved