|
Search: id:A102870
|
|
|
| A102870 |
|
Primes of the form 3^n+8. |
|
+0
1
|
|
| 11, 17, 89, 251, 6569, 1594331, 4782977, 3486784409, 1350851717672992097, 984770902183611232889, 5474401089420219382077155933569751771, 969773729787523602876821942164080815560169
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
These primes appears to be more frequent than 2^n+1 (Mersenne) primes.
|
|
FORMULA
|
a(m) = if[ 3^n+8 is prime then a[m]=3^n+8, for n=1 to 200]
|
|
MATHEMATICA
|
a = Delete[Union[Flatten[Table[If [PrimeQ[3^n + 8] == True, 3^n + 8, 0], {n, 1, 200}]]], 1]
|
|
CROSSREFS
|
Sequence in context: A144051 A146036 A046122 this_sequence A136721 A107172 A090286
Adjacent sequences: A102867 A102868 A102869 this_sequence A102871 A102872 A102873
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Roger Lee Bagula (rlbagulatftn(AT)yahoo.com), Mar 01 2005
|
|
|
Search completed in 0.002 seconds
|
