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 A198175 #15 Dec 14 2014 06:20:12 %S A198175 31,41,59,53,89,97,79,23,43,83,79,41,19,97,71,37,97,59,23,89,53,11,17, %T A198175 67,79,13,23,47,23,31,17,53,59,11,11,17,41,19,11,59,29,89,19,97,59,61, %U A198175 47,23,37,67,83,31,71,19,23,61,43,13,41,73,37,31,17,29,17 %N A198175 Primes from merging of 2 successive digits in decimal expansion of Pi. %C A198175 Leading zeros are not permitted, so each term is 2 digits in length. %H A198175 Vincenzo Librandi, <a href="/A198175/b198175.txt">Table of n, a(n) for n = 1..2000</a> %t A198175 With[{len=2},Select[FromDigits/@Partition[RealDigits[Pi,10,1000][[1]], len,1],IntegerLength[#]==len&&PrimeQ[#]&]] %Y A198175 Cf. A103773, A103789, A103793, A103808, A103809, A103810, A103811, A103812, A104824, A104825, A104826, A104843, A104844, A104845, A104846, A104847, A104848, A104849, A104850, A198161, A198162, A198163, A198164, A198165, A198166, A198167, A198168, A198169, A198170, A198171, A198172, A198173, A198174, A104851, A198177. %K A198175 nonn,base %O A198175 1,1 %A A198175 _Harvey P. Dale_, Oct 21 2011