This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A096817 #30 Apr 27 2025 05:12:37 %S A096817 4,6,10,18,42,78,94,114,190,322,546,3894,10318,11650,12474,20994, %T A096817 61810,103882,296010,636930,653638,926766 %N A096817 Numbers k such that 2^k - 11 is prime. %C A096817 All terms are even since for odd k, 2^k - 11 is divisible by 3. %H A096817 Henri Lifchitz and Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=2%5En-11">Search for 2^n-11</a>, PRP Top Records. %e A096817 k = 6: 64 - 11 = 53 is prime. %t A096817 Select[Range[4,20000],PrimeQ[2^#-11]&] (* _Vladimir Joseph Stephan Orlovsky_, Feb 26 2011*) %Y A096817 Cf. A096502. %Y A096817 Cf. Sequences of numbers k such that 2^k - d is prime: A000043 (d=1), A050414 (d=3), A059608 (d=5), A059609 (d=7), A059610 (d=9), this sequence (d=11), A096818 (d=13), A059612 (d=15), A059611 (d=17), A096819 (d=19), A096820 (d=21), A057220 (d=23), A356826 (d=29). %K A096817 nonn,more %O A096817 1,1 %A A096817 _Labos Elemer_, Jul 13 2004 %E A096817 a(13)-a(16) from _Max Alekseyev_, a(17)-a(18) from _Henri Lifchitz_, added by _Max Alekseyev_, Feb 09 2012 %E A096817 a(19) from Lelio R Paula, added by _Max Alekseyev_, Oct 24 2013 %E A096817 a(20)-a(22) from Stefano Morozzi, added by _Elmo R. Oliveira_, Nov 16 2023