|
| |
|
|
A107506
|
|
Coordination sequence for D_11 lattice.
|
|
0
|
|
|
|
1, 220, 9482, 166188, 1660450, 11260876, 57581898, 237782204, 831240322, 2543995388, 6986455498, 17539148684, 40829208354, 89125931884, 184069213834, 362272019868, 683489419778, 1242224123932, 2183844052874, 3726523300588, 6190586013986, 10037135290380
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
0,2
|
|
|
LINKS
|
Table of n, a(n) for n=0..21.
Index entries for linear recurrences with constant coefficients, signature (11,-55,165,-330,462,-462,330,-165,55,-11,1).
|
|
|
FORMULA
|
G.f.: -(x +1)*(x^10 +208*x^9 +6909*x^8 +66912*x^7 +251010*x^6 +392864*x^5 +251010*x^4 +66912*x^3 +6909*x^2 +208*x +1) / (x -1)^11. [Colin Barker, Nov 20 2012]
|
|
|
CROSSREFS
|
Cf. A007900.
Sequence in context: A022042 A095702 A271674 * A140918 A049023 A282591
Adjacent sequences: A107503 A107504 A107505 * A107507 A107508 A107509
|
|
|
KEYWORD
|
nonn,easy
|
|
|
AUTHOR
|
N. J. A. Sloane, May 28 2005
|
|
|
STATUS
|
approved
|
| |
|
|
