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 A085414 #7 Oct 05 2013 02:10:46 %S A085414 131,191,313,373,797,1031,1091,1511,1571,1811,1931,3313,3373,3533, %T A085414 3593,3673,3733,3793,3833,7517,7577,7877,9199,9419,9479,9539,9679, %U A085414 9719,9839,10091,10211,10331,10391,10631,10691,11171,12011,12491,12791,12911 %N A085414 Primes that are a concatenation of a prime and its first digit. %C A085414 Also primes remaining prime after deleting last digit, but not all such primes. See also A012833, A024770, A033664, A069867. %e A085414 13 is a term because concatenation of 13 and 1 is prime. %Y A085414 Cf. A085412, A085413, A012833, A024770, A033664, A069867. %K A085414 nonn,base %O A085414 1,1 %A A085414 _Zak Seidov_, Jun 29 2003