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%I #9 Sep 08 2022 08:46:08
%S 41,43,47,71,103,167,1063,2087,8231,131111,536870951,8589934631,
%T 549755813927,8796093022247,154742504910672534362390567,
%U 40564819207303340847894502572071,162259276829213363391578010288167,2722258935367507707706996859454145691687
%N Primes of the form 2^n + 39.
%C Associated n: 1, 2, 3, 5, 6, 7, 10, 11, 13, 17, 29, 33, 39, 43, 87, 105, 107, 131, 253, 329, ....
%H Vincenzo Librandi, <a href="/A243429/b243429.txt">Table of n, a(n) for n = 1..34</a>
%t Select[Table[2^n + 39, {n, 0, 500}], PrimeQ]
%o (Magma) [a: n in [0..500] | IsPrime(a) where a is 2^n+39];
%Y 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).
%K nonn
%O 1,1
%A _Vincenzo Librandi_, Jun 05 2014
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