OFFSET
1,2
COMMENTS
Related to the problem in A076337.
PROG
(PARI) forstep(k=1, 6269, 2, c=m=0; while(m<k, if(ispseudoprime(abs(2^m-k)), c=1; break); m++); if(c==0, print1(k, ", ")));
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Arkadiusz Wesolowski, Oct 28 2015
STATUS
approved