|
Search: id:A096510
|
|
|
| A096510 |
|
a(n) is the smallest number x such that the number of prime powers (including primes, excluding 1), in the neighborhood of x with radius ceiling(log(x)), equals n. |
|
+0
1
|
|
| 1, 54, 2, 12, 3, 8, 4792, 75991, 284736, 6561003, 51448375, 964669618, 18320500423
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
With increasing n the radius of log(n) slowly increases, while frequency of prime-powers decreases.
No more terms < 369*10^8. - David Wasserman (dwasserm(AT)earthlink.net), Nov 16 2007
|
|
EXAMPLE
|
a[8]=284736: because in [284723,284749] around a(8),
8 prime(powers) occur first,with radius=r=13;
a[0]=1;a[1]=54 means that in [50,58] only 53 is prime,r=4.
|
|
CROSSREFS
|
Cf. A096508-A096512.
Cf. A096509-A096523.
Sequence in context: A022080 A033688 A058283 this_sequence A137939 A033374 A116386
Adjacent sequences: A096507 A096508 A096509 this_sequence A096511 A096512 A096513
|
|
KEYWORD
|
more,nonn
|
|
AUTHOR
|
Labos E. (labos(AT)ana.sote.hu), Jul 12 2004
|
|
EXTENSIONS
|
4 more terms from David Wasserman (dwasserm(AT)earthlink.net), Nov 16 2007
|
|
|
Search completed in 0.002 seconds
|
