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 A135316 #10 Jan 03 2022 21:08:50
%S A135316 691,887,1997,3583,3673,3853,3943,4079,4259,4349,4799,4889,5581,5851,
%T A135316 6257,6977,8089,8179,8269,8539,8629,8719,10663,10883,11777,11833,
%U A135316 11867,11923,11953,11959,12097,12763,12823,13397,13523,13553,13597,13633
%N A135316 Primes in A023108(n); or Lychrel primes.
%C A135316 A023108(n) = Positive integers which apparently never result in a palindrome under repeated applications of the function f(x) = x + (x with digits reversed).
%e A135316 A023108(n) begins {196, 295, 394, 493, 592, 689, 691, 788, 790, 879, 887, ...}.
%e A135316 Thus a(1) = 691 which is the first prime in A023108(n), a(2) = 887 which is the second prime in A023108(n).
%Y A135316 Cf. A023108, A088753.
%K A135316 nonn,base
%O A135316 1,1
%A A135316 _Alexander Adamchuk_, Dec 05 2007
%E A135316 More terms from _Dmitry Kamenetsky_, May 04 2009