OFFSET
1,1
COMMENTS
Corresponding n are given in A057908.
The next term has 797 digits. - Harvey P. Dale, Mar 16 2015
MATHEMATICA
Select[Table[4^n-n, {n, 200}], PrimeQ] (* Harvey P. Dale, Mar 16 2015 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Alex Ratushnyak, Apr 06 2013
STATUS
approved