|
Search: id:A046948
|
|
|
| A046948 |
|
Sizes of successive balls in E_8 lattice. |
|
+0
2
|
|
| 1, 241, 2401, 9121, 26641, 56881, 117361, 199921, 340321, 522001, 794161, 1113841, 1604401, 2131921, 2874961, 3721681, 4845121, 6024481, 7659601, 9306001, 11513521, 13825201, 16702321, 19622641, 23553841, 27334081
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
PROGRAM
|
(PARI) B=1; th=[ 1 ]; bl=[ 1 ]; for (n=1, 10000, t1=divisors(n); t2=0; for (i=1, length(t1), t2=t2+t1[ i ]^3); t3=240*t2; th=concat(th, t3); B=B+t3; bl=concat(bl, B)); th; bl;
|
|
CROSSREFS
|
Partial sums of A004009.
Sequence in context: A142452 A167739 A119596 this_sequence A165383 A006687 A060893
Adjacent sequences: A046945 A046946 A046947 this_sequence A046949 A046950 A046951
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
N. J. A. Sloane (njas(AT)research.att.com).
|
|
|
Search completed in 0.002 seconds
|
