OFFSET
1,1
COMMENTS
a(35) > 392. - Robert Price, Jul 21 2017
EXAMPLE
3 is a term because 155*2^3 + 1 = 1241 = 17*73.
MATHEMATICA
Select[Range[200], PrimeOmega[155 2^# + 1] == 2 &]
PROG
(Magma) [n: n in [2..200] | &+[d[2]: d in Factorization(155*2^n+1)] eq 2];
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Vincenzo Librandi, Jun 25 2017
EXTENSIONS
a(27)-a(34) from Robert Price, Jul 21 2017
a(35)-a(45) from Tyler Busby, Feb 17 2023
STATUS
approved