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 A069663 #15 Mar 18 2016 04:01:53 %S A069663 2,11,101,1021,10111,100003,1000003,10010101,101001001,1000000021, %T A069663 10000001101,100000000003,1000000020001,10000000001011, %U A069663 100000000100101,1000000000100011,10000000000001101,100000000000000003 %N A069663 Smallest n-digit prime with minimum digit sum. %H A069663 Chai Wah Wu, <a href="/A069663/b069663.txt">Table of n, a(n) for n = 1..100</a> %e A069663 a(5) = 10111 is the least prime with digit sum 4 and no other/smaller 5 digit prime has a digit sum 4 or less. %Y A069663 Cf. A069661, A069662, A113628. %K A069663 nonn,base %O A069663 1,1 %A A069663 _Amarnath Murthy_, Apr 05 2002 %E A069663 More terms from _Sascha Kurz_, Aug 25 2002 %E A069663 Edited by _N. J. A. Sloane_, May 05 2007