|
| |
|
|
A058330
|
|
a(n) is smallest positive integer, distinct from any terms earlier in the sequence, such that (sum{k=1 to n}[a(k)]) divides (product{k=1 to n}[a(k)])*(sum{k=1 to n}[1/a(k)]).
|
|
0
|
|
|
|
1, 2, 4, 3, 7, 602, 292174, 200550, 21353, 14210, 6174, 2744, 8852, 5554, 3494, 7220, 1536, 2520, 1620, 1236, 896, 784, 1764, 140, 2560, 240, 1128, 3240, 1512, 280, 800, 243, 4557, 245, 1579, 666, 135, 2079, 2646, 4650, 250, 1862, 528, 496, 152, 304, 88
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
a(4) = 3 because 3 is smallest positive integer m, not = to 1, 2, or 4, where (1 + 2 + 4 + m) divides 1 * 2 * 4 * m * (1 + 1/2 + 1/4 + 1/m).
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
EXTENSIONS
|
|
|
|
STATUS
|
approved
|
| |
|
|
