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 A177852 #3 Mar 30 2012 18:52:40 %S A177852 0,2,2,6,7,9,7,9,18,24,30,17,21,28,41,38,53,55,32,36,38,58,48,54,62, %T A177852 66,82,86,88,78,126,75,81,69,79,95,101,93,111,117,123,125,183,137,127, %U A177852 143,155,215,171,173,177,231,185,243,221,137,143,145,151,155,157,167,181,227 %N A177852 prime(n)-A177687(n). %F A177852 a(n)=A000040(n)-A177687(n). %K A177852 nonn,base,less %O A177852 1,2 %A A177852 _Juri-Stepan Gerasimov_, May 14 2010 %E A177852 Keyword:base,less added, most values from a(49) on corrected by _R. J. Mathar_, May 18 2010