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 A119888 #3 Mar 31 2012 10:26:05 %S A119888 3,6,9,12,15,18,21,22,24,27,30,33,36,39,42,44,45,48,51,54,57,60,63,66, %T A119888 69,72,75,78,81,84,87,88,90,93,96,99,102,105,108,110,111,114,117,120, %U A119888 123,126,129,132,134,135,138,141,144,150,153,154 %N A119888 Numbers n such that (n,R_n)>1, where R_n=(10^n -1)/9=A002275(n). %C A119888 Includes all multiples of 3 (A008585) and multiples of 11 with coefficients A063450. A special subsequence is A014950. %Y A119888 Cf. A119905. %K A119888 nonn %O A119888 1,1 %A A119888 _Lekraj Beedassy_, Aug 04 2006