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 A227823 #18 Aug 14 2013 19:25:10 %S A227823 11,12,14,16,20,21,23,25,29,30,32,34,38,41,43,47,49,50,52,56,58,61,65, %T A227823 67,70,74,76,83,85,89,92,94,98,111,203,205,230,250,302,320,502,520 %N A227823 Numbers n with property that each sum of any k-subsequence of digits of n with k>=2 is prime. %C A227823 111 is the only number > 100 with all nonzero digits. %e A227823 203 is in the sequence because 2+0=2, 2+3=5, 0+3=3, 2+0+3=5 and 2,3,5 are all prime. %Y A227823 Numbers are contained in both A028834 and A221699. %K A227823 nonn,base,fini,full,easy %O A227823 1,1 %A A227823 _Derek Orr_, Jul 31 2013