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 A082563 #18 Sep 24 2015 01:24:22 %S A082563 3,131,11311,121131121,1212113112121,36121211311212163, %T A082563 303612121131121216303,7230361212113112121630327, %U A082563 30723036121211311212163032703,723072303612121131121216303270327,1472307230361212113112121630327032741,114723072303612121131121216303270327411 %N A082563 a(1) = 3; for n>=1, a(n+1) is the smallest palindromic prime with a(n) as a central substring. %C A082563 The minimal nested palindromic primes with seed 3; see A261881 for a guide to related sequences. %H A082563 Clark Kimberling, <a href="/A082563/b082563.txt">Table of n, a(n) for n = 1..200</a> %e A082563 As a triangle: %e A082563 ........3 %e A082563 .......131 %e A082563 ......11311 %e A082563 ....121131121 %e A082563 ..1212113112121 %e A082563 36121211311212163 %t A082563 s = {3}; Do[NestWhile[# + 1 &, 1, ! PrimeQ[tmp = FromDigits[Join[#, IntegerDigits[Last[s]], Reverse[#]] &[IntegerDigits[#]]]] &]; AppendTo[s, tmp], {15}]; s %t A082563 (* _Peter J. C. Moses_, Sep 01 2015 *) %Y A082563 Cf. A053600, A075597, A261881. %K A082563 nonn,base %O A082563 1,1 %A A082563 _Benoit Cloitre_, May 04 2003 %E A082563 Name changed by _Arkadiusz Wesolowski_, Sep 15 2011 %E A082563 More terms from _Clark Kimberling_, Sep 23 2015