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A121618
Nexus primes of order 7 or primes of form n^7 - (n-1)^7 = A022523(n-1).
11
127, 14197, 543607, 1273609, 2685817, 5217031, 16344637, 141903217, 1928294551, 8258704609, 14024867221, 22815424087, 30914273881, 91154730577, 116160677851, 183510024391, 280667317267, 552932810431, 1517045588059
OFFSET
1,1
COMMENTS
Indices n such that Nexus number of 7 order (or A022523(n-1) = n^7 - (n-1)^7) is prime are listed in A121619(n) = {2,4,7,8,9,10,12,17,26, 33,36,39,41,49,51,55,59,66,78,79,80,88,96,98,...}. a(1) = 127 is Mersenne prime A000668(4).
LINKS
MATHEMATICA
Select[Table[n^7 - (n-1)^7, {n, 1, 200}], PrimeQ]
PROG
(PARI) select(isprime, vector(1000, n, n^7-(n-1)^7)) \\ Charles R Greathouse IV, May 15 2013
KEYWORD
nonn,easy
AUTHOR
Alexander Adamchuk, Aug 10 2006
STATUS
approved