|
| |
|
|
A126902
|
|
Coordination sequence for 12-dimensional cyclotomic lattice Z[zeta_21].
|
|
0
| |
|
|
1, 21, 231, 1764, 10479, 51450, 216531, 800121, 2642514, 7913619, 21754425, 55475826, 132425181, 298205544, 637710549, 1302463575, 2553071556, 4823274561, 8814149379, 15629570544, 26967111675, 45382254246, 74648134911, 120238185669, 189964987254
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
REFERENCES
| M. Beck and S. Hosten, Cyclotomic polytopes and growth series of cyclotomic lattices, arXiv math.CO/0508136.
|
|
|
FORMULA
| G.f.: (x^12 + 9*x^11 + 45*x^10 + 158*x^9 + 432*x^8 + 909*x^7 + 1302*x^6 + 909*x^5 + 432*x^4 + 158*x^3 + 45*x^2 + 9*x + 1)/(x-1)^12.
|
|
|
CROSSREFS
| Sequence in context: A020267 A188354 A064322 * A162646 A010973 A022586
Adjacent sequences: A126899 A126900 A126901 * A126903 A126904 A126905
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Mar 17 2007
|
| |
|
|
