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 A032663 #7 Mar 09 2015 09:35:18 %S A032663 11,23,13,47,37,1217,17,29,19,211,313,617,113,619,317,419,521,421,523, %T A032663 827,727,223,2143,1033,1741,227,127,229,331,433,131,233,739,1447,337, %U A032663 439,137,239,139,241,1151,647,547,1861,347,449,349,653,149,251,151,859 %N A032663 Primes that are the smallest decimal concatenations of n with n + (0,1,2,3,...). %C A032663 First terms of sequences '11', A030458, A032625-A032632,continued with displacements d > 9. %e A032663 6th term is prime 1217: 17 - 12 = displacement 5 (=6-1). %Y A032663 Cf. A032662. %K A032663 nonn,base %O A032663 1,1 %A A032663 _Patrick De Geest_, May 15 1998 %E A032663 Edited by _Charles R Greathouse IV_, Apr 30 2010