OFFSET
1,1
COMMENTS
Associated n: 1, 2, 3, 5, 6, 7, 10, 11, 13, 17, 29, 33, 39, 43, 87, 105, 107, 131, 253, 329, ....
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..34
MATHEMATICA
Select[Table[2^n + 39, {n, 0, 500}], PrimeQ]
PROG
(Magma) [a: n in [0..500] | IsPrime(a) where a is 2^n+39];
CROSSREFS
Cf. primes of the form 2^n+k: A092506 (k=1), A057733 (k=3), A123250 (k=5), A104066 (k=7), A104070 (k=9), A156940 (k=11), A104067 (k=13), A144487 (k=15), A156973 (k=17), A104068 (k=19), A156983 (k=21), A176922 (k=23), A104072 (k=25), A104071 (k=27), A156974 (k=29), A104069 (k=31), A176926 (k=33), A176927 (k=35), A176924 (k=37), this sequence (k=39), A176925 (k=41), A243430 (k=43), A243431 (k=45), A243432 (k=47), A104073 (k=49).
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Jun 05 2014
STATUS
approved