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 A163398 #5 Mar 30 2012 18:52:34 %S A163398 167,176,403,513,761,935,1037,1218,1307,1559,1865,1932,1995,2057,2123, %T A163398 2255,2288,2340,2414,2852,3152,3483,3581,3734,3914,4136,4169,4226, %U A163398 4238,4265,4373,4390,4433,4436,4443,4460,4466,4482,4631,4706,4806,4842,4850 %N A163398 Numbers m such that all numbers 10*m+(odd single-digit number) and 100*m+(any 2-digit, digits coprime to 10) are composite. %C A163398 The first requirement is that 10m+1, 10m+3, 10m+5, 10m+7 and 10m+9 are all composite; for 10*m+5 with the divisor 5 this is redundant. The second requirement is that 100*m plus any 2-digit number of A136333 is also composite. %e A163398 m=167 is in the sequence because 1671, 1673, 1677, 1679, 16711, 16713, 16717, 16719, 16731, %e A163398 16733, 16737, 16739, 16771, 16773, 16777, 16779, 16791, 16793, 16797, 16799 are composites. %Y A163398 Cf. A002808. %K A163398 nonn,base,less %O A163398 1,1 %A A163398 Vladislav-Stepan Malakhovsky and _Juri-Stepan Gerasimov_, Jul 26 2009 %E A163398 Rephrased in terms of A136333 and extended by _R. J. Mathar_, Aug 02 2009