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 A136669 #15 May 13 2013 01:48:46
%S A136669 5,11,59,359,5039,55439,1441439,135483209545341953934626770390607999,
%T A136669 21406347108164028721671029721716063999,
%U A136669 6223083124956116561507895939157782409673929631999,78232234099885463677928129398618807521962436643076243437332696602750813193299417065162966120702842438719999
%N A136669 Primes of the form colossally abundant number - 1.
%C A136669 The n-th colossally abundant number - 1 is prime for n = 2, 3, 4, 6, 8, 9, 11, 34, 36, 43, 73, 81, 86, 115.
%F A136669 {A004490(i) - 1} INTERSECTION A000040.
%e A136669 A004490(11) = 1441440, and 1441440 - 1 = 1441439 is prime.
%Y A136669 Cf. A000040, A004490, A181561, A181562.
%K A136669 nonn
%O A136669 1,1
%A A136669 _Jonathan Vos Post_, Jan 31 2011
%E A136669 a(11) from _Charles R Greathouse IV_, Oct 09 2011