login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A121055
Sizes of successive clusters in b.c.c. lattice centered at midpoint of a short edge.
2
2, 8, 14, 22, 34, 40, 52, 70, 76, 90, 108, 120, 138, 156, 168, 180, 210, 228, 242, 266, 272, 302, 332, 344, 368, 392, 410, 434, 464, 476, 502, 544, 568, 580, 610, 628, 652, 700, 718, 754, 778, 796, 832, 862, 886, 912, 960, 978, 1008, 1056
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.
CROSSREFS
Partial sums of A005869. Equals 2*A038835 and also A121054/2. Cf. A008443.
Sequence in context: A161464 A211873 A248057 * A344161 A375472 A107072
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Aug 09 2006
STATUS
approved