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 A162775 #5 Mar 30 2012 18:39:36 %S A162775 2,3,8,5,12,7,16,27,10,33,24,13,28,45,48,17,54,38,20,63,44,69,96,50, %T A162775 26,54,28,58,210,62,96,33,170,35,108,111,76,117,120,41,210,43,88,45, %U A162775 276,282,96,49,100,153,52,265,162,165,168,57,174,118,60 %N A162775 a(n) = A141042(n+1)/2. %Y A162775 Cf. A000040, A000720, A141042, A152535. %K A162775 easy,nonn %O A162775 1,1 %A A162775 _Omar E. Pol_, Jul 30 2009 %E A162775 More terms from _Sean A. Irvine_, Jun 22 2011