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 A070248 #7 Nov 06 2015 02:02:15
%S A070248 7,151,313,10501,11311,30103,1201021,3001003,100050001,100131001,
%T A070248 101030101,110111011,111010111,10000500001,1100011100011,
%U A070248 1100101010011,100020010020001
%N A070248 Palindromic primes with digit sum 7.
%H A070248 Chai Wah Wu, <a href="/A070248/b070248.txt">Table of n, a(n) for n = 1..1111</a>
%t A070248 Do[p = Join[ IntegerDigits[n], Reverse[ Drop[ IntegerDigits[n], -1]]]; q = Plus @@ p; If[ PrimeQ[ FromDigits[p]] && q == 7, Print[ FromDigits[p]]], {n, 1, 10^7}]
%Y A070248 Cf. A002385, A070247 & A070249.
%K A070248 base,nonn
%O A070248 1,1
%A A070248 _Amarnath Murthy_, May 05 2002
%E A070248 Edited by _Robert G. Wilson v_, May 15 2002