|
Search: id:A128349
|
|
|
| A128349 |
|
Numbers n such that (13^n - 5^n)/8 is prime. |
|
+0
20
|
| |
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
All terms are primes.
|
|
MATHEMATICA
|
k=13; Do[p=Prime[n]; f=(k^p-5^p)/(k-5); If[ PrimeQ[f], Print[p] ], {n, 1, 100}]
|
|
CROSSREFS
|
Cf. A062572, A128344, A128345, A128346, A128347, A128348, A128350, A128351, A128352, A128353, A128354. Cf. A004061, A082182, A121877, A059802. Cf. A057171, A082387, A122853, A128335, A128336, A128337, A128338, A128339, A128340, A128341, A128342.
Sequence in context: A030662 A026590 A095073 this_sequence A001834 A099393 A083588
Adjacent sequences: A128346 A128347 A128348 this_sequence A128350 A128351 A128352
|
|
KEYWORD
|
hard,more,nonn
|
|
AUTHOR
|
Alexander Adamchuk (alex(AT)kolmogorov.com), Feb 27 2007
|
|
|
Search completed in 0.002 seconds
|
