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 A045719 #7 May 18 2013 16:49:24 %S A045719 0,0,0,0,0,2,2,0,2,1,2,3,0,1,1,2,1,0,1,2,3,2,1,0,2,1,3,4,1,6,5,6,10,5, %T A045719 5,2,6,6,7,10,9,2,3,5,9,3,2,3,2,2,3,5,3,3,3,3,2,5,3,2,5,5,4,6,4,10,4, %U A045719 6,7,3,3,6,6,6,9,2,5,9,1,0,5,3,5,2,3,2,0,4,3,3,4,5,2,5,0,3,2,3,5,2,4,2,4,3,6,3 %N A045719 Number of primes embedded in n-th prime. %C A045719 a(n) counts permuted subsequences of digits of prime(n) which denote primes distinct from prime(n). %e A045719 For example a(11)=3 because 37 generate 3 primes with its digits: 3, 7, 73 %Y A045719 Cf. A000040. %K A045719 nonn,base %O A045719 1,6 %A A045719 _Felice Russo_ %E A045719 More terms from _David W. Wilson_