|
Search: id:A035817
|
|
|
| A035817 |
|
Coordination sequence for lattice D*_64 (with edges defined by l_1 norm = 1). |
|
+0
1
|
|
| 1, 128, 8192, 349568, 11190272, 286680704, 6123315200, 112173964160, 1799375912960, 25678370512000, 330122643283968, 3862436697723264, 41474426978451456, 411631804378210944, 3799040291725172736
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
REFERENCES
|
J. Serra-Sagrista, Enumeration of lattice points in l_1 norm, Information Processing Letters, 76, no. 1-2 (2000), 39-44.
|
|
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=64.
|
|
CROSSREFS
|
Sequence in context: A022150 A008791 A013700 this_sequence A001661 A093532 A016747
Adjacent sequences: A035814 A035815 A035816 this_sequence A035818 A035819 A035820
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
N. J. A. Sloane (njas(AT)research.att.com), J. Serra-Sagrista (jserra(AT)ccd.uab.es)
|
|
|
Search completed in 0.002 seconds
|
