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 A327429 #19 Jul 14 2021 07:43:45 %S A327429 4,7,11,101,313,727,10301,30103,70207,1003001,3001003,7014107, %T A327429 100030001,300020003,700020007,10000500001,30000500003,70005450007, %U A327429 1000008000001,3000002000003,7000005000007,100000323000001,300000020000003,700000141000007,10000000500000001,30000000800000003,70000002820000007 %N A327429 Record gaps between palindromic primes (upper end) (compare A327428, which gives lower ends of these gaps). %C A327429 This sequence is infinite if there exist infinitely many palindromic primes (see comment in A327427). %Y A327429 Cf. A000101, A002385, A327427, A327428. %K A327429 nonn,base %O A327429 1,1 %A A327429 _Chai Wah Wu_, Sep 09 2019