OFFSET
1,1
COMMENTS
The next term is too large to include.
See A117706 for the corresponding numbers x.
The next term has 113 digits. - Harvey P. Dale, Jan 17 2018
MATHEMATICA
Select[Table[6^x-x^6, {x, 200}], PrimeQ] (* Harvey P. Dale, Jan 17 2018 *)
PROG
(PARI) for(x=1, 1e5, ispseudoprime(p=6^x-x^6)&&print1(p", "))
CROSSREFS
KEYWORD
nonn
AUTHOR
M. F. Hasler, Aug 20 2014
STATUS
approved