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 A068193 #3 Jun 24 2014 01:08:22 %S A068193 1,2,3,4,5,6,7,8,11,10,9,13,14,12,24,17,16,19,22,20,33,29,52,39,46,15, %T A068193 23,25,18,74,26,41,44,32,36,21,56,108,34,30,37,27,53,42,78,51,113,64, %U A068193 43,50,58,57,31,48,67,68,47,38,83,86,65,170,103,28,77,70,69,63,129,116 %N A068193 The prime indices of sequence A068192. (That sequence is conjectured to contain only primes.). %C A068193 a(11)=9 because a(11) in sequence A068192 is 23 and this is the 9th prime number. %Y A068193 Cf. A068192. %K A068193 nonn %O A068193 1,2 %A A068193 Frank Buss (fb(AT)frank-buss.de), Feb 19 2002 %E A068193 Edited by _Dean Hickerson_, Jun 10 2002