|
Search: id:A086564
|
|
|
| A086564 |
|
Smallest k such that 10^k + 1 has n distinct prime divisors. |
|
+0
1
|
|
| 0, 4, 3, 11, 9, 36, 15, 33, 39, 69, 63, 45
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
All subsequent terms are > 71. - David Wasserman (wasserma(AT)spawar.navy.mil), Mar 28 2005
|
|
FORMULA
|
a(n) = Log to the base 10 of {A086563(n)-1}.
|
|
EXAMPLE
|
a(5) = 9 = Log to the base 10 {1000000001 - 1}.
|
|
CROSSREFS
|
Cf. A086563.
Sequence in context: A100492 A072183 A005013 this_sequence A080777 A001166 A065337
Adjacent sequences: A086561 A086562 A086563 this_sequence A086565 A086566 A086567
|
|
KEYWORD
|
more,nonn
|
|
AUTHOR
|
Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 31 2003
|
|
EXTENSIONS
|
More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Sep 22 2003
a(10)-a(12) from David Wasserman (wasserma(AT)spawar.navy.mil), Mar 28 2005
|
|
|
Search completed in 0.002 seconds
|
