|
|
A216424
|
|
Numbers k such that 4^k + k^4 - 1 is prime.
|
|
1
|
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
MATHEMATICA
|
Select[Range[0, 5000], PrimeQ[4^# + #^4 - 1] &]
|
|
PROG
|
(Magma) [n: n in [0..800] | IsPrime(4^n+n^4-1)];
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|