%I #11 Sep 08 2022 08:46:07
%S 15,19,43,139,2059,8203,131083,524299,8388619,536870923,2147483659,
%T 137438953483,2199023255563,8796093022219,140737488355339,
%U 9007199254741003,576460752303423499,2305843009213693963,147573952589676412939,2361183241434822606859
%N 2^p + 11 where p is prime.
%H Vincenzo Librandi, <a href="/A241680/b241680.txt">Table of n, a(n) for n = 1..200</a>
%t Table[2^Prime[n] + 11, {n, 40}]
%o (Magma) [2^p+11: p in PrimesUpTo(100)];
%Y Cf. similar sequence listed in A241573.
%K nonn
%O 1,1
%A _Vincenzo Librandi_, Apr 29 2014