|
|
A035815
|
|
Coordination sequence for lattice D*_60 (with edges defined by l_1 norm = 1).
|
|
0
|
|
|
1, 120, 7200, 288040, 8644800, 207648024, 4158723680, 71440725960, 1074729932160, 14385297437880, 173483353200288, 1904315460088680, 19187724061887040, 178728796729801560, 1548407735451345120
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
|
|
FORMULA
|
a(m)=add(2^k*binomial(n, k)*binomial(m-1, k-1), k=0..n)+2^n*binomial((n+2*m)/2-1, n-1); with n=60.
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|