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 A155214 #16 May 01 2013 21:05:52 %S A155214 5,8,424,606,666,2552,42924,63936,80108,85358,206602,210012,255552, %T A155214 617716,624426,2003002,2056502,2178712,2229222,2239322,2253522, %U A155214 2358532,2400042,2426242,2554552,2634362,2702072,2804082,2907092,2948492 %N A155214 Palindromes n with the property that for some prime p, n = p + prime(p). %C A155214 It is conjectured that the sequence is infinite. %H A155214 Ulrich Krug, Aurelien Herault, and Harvey P. Dale, <a href="/A155214/b155214.txt">Table of n, a(n) for n = 1..300</a> (the initial 83 terms were provided by Ulrich Krug and Aurelien Herault) %e A155214 2+prime(2) = 2+3 = 5; 3+prime(3) = 3+5 = 8; 270527+prime(270527) = 270527+3808177 = 4078704, etc. %t A155214 Select[#+Prime[#]&/@Prime[Range[50000]],IntegerDigits[#] == Reverse[ IntegerDigits[ #]]&] (* _Harvey P. Dale_, Sep 09 2012 *) %Y A155214 See A145531 for the primes p. %K A155214 nonn,base %O A155214 1,1 %A A155214 Ulrich Krug (leuchtfeuer37(AT)gmx.de), Jan 22 2009, Mar 02 2009, Mar 04 2009 %E A155214 Edited by _N. J. A. Sloane_, Mar 02 2009 %E A155214 a(60)-a(83) from Aurelien Herault (aurelien(AT)a2studio.fr), Mar 16 2009 %E A155214 Examples culled by _D. S. McNeil_, Nov 21 2010