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 A083183 #12 Nov 07 2015 04:09:48 %S A083183 2,3,5,7,353,373,33533,757,35753,75557,77377,3773773,325777523, %T A083183 327757723,357575753,32577577523,32777777723,35775757753,72777777727, %U A083183 3557577757553,3777727277773,3775777775773,7777573757777 %N A083183 Smallest palindromic prime using only prime digits (2,3,5,7) and having a sum of digits = prime(n), or 0 if no such number exists. %C A083183 Conjecture: no entry is zero. %H A083183 Chai Wah Wu, <a href="/A083183/b083183.txt">Table of n, a(n) for n = 1..39</a> %Y A083183 Cf. A083184, A045336. %K A083183 base,nonn %O A083183 1,1 %A A083183 _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 26 2003 %E A083183 Corrected and extended by _Patrick De Geest_, Jun 12 2003