|
|
A035786
|
|
Coordination sequence for C_49 lattice.
|
|
1
|
|
|
1, 4802, 3846402, 1235463362, 213469045762, 23082542932162, 1714286978300162, 93160372030893762, 3879015208550830082, 128171745658737612482, 3455162221991189940482, 77713577966625653414082
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
J. H. Conway and N. J. A. Sloane, Low-Dimensional Lattices VII: Coordination Sequences, Proc. Royal Soc. London, A453 (1997), 2369-2389 (pdf).
|
|
FORMULA
|
a(n) = [x^(2n)] ((1+x)/(1-x))^49.
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
Joan Serra-Sagrista (jserra(AT)ccd.uab.es)
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|