|
Search: id:A038999
|
|
|
| A038999 |
|
Sublattices of index n in generic 12-dimensional lattice. |
|
+0
2
|
|
| 1, 4095, 265720, 11180715, 61035156, 1088123400, 2306881200, 26167664835, 52955405230, 249938963820, 313842837672, 2970939589800, 1941507093540, 9446678514000, 16218261652320, 57162391576563
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
REFERENCES
|
M. Baake, "Solution of coincidence problem...", in R. V. Moody, ed., Math. of Long-Range Aperiodic Order, Kluwer 1997, pp. 9-44.
|
|
LINKS
|
Index entries for sequences related to sublattices
|
|
FORMULA
|
f(Q, n)=Sum d*f(Q-1, d), d|n; here Q=12.
Multiplicative with a(p^e) = product (p^(e+k)-1)/(p^k-1), k=1..11
|
|
CROSSREFS
|
Cf. A001001.
Sequence in context: A075957 A075953 A011562 this_sequence A022528 A024010 A123868
Adjacent sequences: A038996 A038997 A038998 this_sequence A039000 A039001 A039002
|
|
KEYWORD
|
nonn,mult
|
|
AUTHOR
|
N. J. A. Sloane (njas(AT)research.att.com).
|
|
|
Search completed in 0.002 seconds
|
