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 A262644 #4 Oct 26 2015 22:24:20
%S A262644 3,41,2083,26041,1692709,677083367,627278646679,187343343120121,
%T A262644 159655659994018667,2255131136576400770887,1104116174856823349350321,
%U A262644 18691706438024838972135587027,241078822520146767324214702284691,396825475231058771412223714725086039
%N A262644 Base-10 representation of the primes at A262643.
%H A262644 Clark Kimberling, <a href="/A262644/b262644.txt">Table of n, a(n) for n = 1..300</a>
%e A262644 n A262643(n) base-10 representation
%e A262644 1 3 3
%e A262644 2 131 41
%e A262644 3 31313 2083
%t A262644 s = {3}; base = 5; z = 20; Do[NestWhile[# + 1 &, 1, ! PrimeQ[tmp = FromDigits[Join[#, IntegerDigits[Last[s]], Reverse[#]] &[IntegerDigits[#, base]], base]] &];
%t A262644 AppendTo[s, FromDigits[IntegerDigits[tmp, base]]], {z}]; s (* A262643 *)
%t A262644 Map[FromDigits[ToString[#], base] &, s] (* A262644 *)
%t A262644 (* _Peter J. C. Moses_, Sep 01 2015 *)
%Y A262644 Cf. A262643.
%K A262644 nonn,easy,base
%O A262644 1,1
%A A262644 _Clark Kimberling_, Oct 24 2015