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 A309359 #15 Jul 27 2019 12:17:52
%S A309359 6,12,23,47,97,191,383,761,1523,3049,6107,12252,24376,48877,97777,
%T A309359 195659,391623,783257,1566386,3133974,6269116,12538053,25082361,
%U A309359 50170976,100353498,200730129,401498897,803081460,1606292647,3212862108
%N A309359 Median of the primes p with 2^(n-1) < p < 2^n.
%C A309359 For n >= 3, median of the primes with n binary digits. The median of an even number of values is assumed to be defined as the arithmetic mean of the two central elements in their sorted list. The special case of the primes with two binary digits {2, 3} is excluded, because their median would be 5/2.
%H A309359 Hugo Pfoertner, <a href="/A309359/b309359.txt">Table of n, a(n) for n = 3..63</a>
%e A309359 a(3) = 6: 2^2 < {5, 7} < 2^3, (5 + 7)/2 = 6.
%e A309359 a(4) = 12: 2^3 < {11, 13} < 2^4, (11 + 13)/2 = 12
%e A309359 a(5) = 23: 2^4 < {17, 19, 23, 29, 31} < 2^5, median = 23.
%Y A309359 Cf. A007053, A036378, A309329.
%K A309359 nonn
%O A309359 3,1
%A A309359 _Hugo Pfoertner_, Jul 25 2019