|
| |
|
|
A058037
|
|
Numbers n such that 3^n - n is prime.
|
|
0
| |
|
|
1, 2, 8, 20, 40, 104, 110, 208, 472, 832, 1982, 25628
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,2
|
|
|
COMMENTS
| Except for the first term all terms are of the form 6k+2 or 6k+4. There are no further terms up to 34500. - Farideh Firoozbakht (mymontain(AT)yahoo.com), Jul 17 2005
|
|
|
MATHEMATICA
| Do[ If[ PrimeQ[ 3^n - n ], Print[ n ] ], {n, 0, 3000} ]
|
|
|
CROSSREFS
| Sequence in context: A032633 A007290 A049031 * A203420 A048096 A072250
Adjacent sequences: A058034 A058035 A058036 * A058038 A058039 A058040
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 16 2000
|
|
|
EXTENSIONS
| 25628 from Farideh Firoozbakht (mymontain(AT)yahoo.com), Jul 17 2005
|
| |
|
|
