A121054 - OEIS

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A121054

Sizes of successive clusters in f.c.c. lattice centered at a tetrahedral hole.

4, 16, 28, 44, 68, 80, 104, 140, 152, 180, 216, 240, 276, 312, 336, 360, 420, 456, 484, 532, 544, 604, 664, 688, 736, 784, 820, 868, 928, 952, 1004, 1088, 1136, 1160, 1220, 1256, 1304, 1400, 1436, 1508, 1556, 1592, 1664, 1724, 1772, 1824, 1920, 1956, 2016, 2112

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,1

REFERENCES

N. J. A. Sloane and B. K. Teo, Theta series and magic numbers for close-packed spherical clusters, J. Chem. Phys. 83 (1985) 6520-6534.

LINKS

Table of n, a(n) for n=0..49.

CROSSREFS

Partial sums of A005886. Equals 2*A121055.

Sequence in context: A228167 A017569 A161335 * A332044 A273368 A209979

Adjacent sequences: A121051 A121052 A121053 * A121055 A121056 A121057

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Aug 09 2006

STATUS

approved