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 A135260 #5 Mar 30 2012 18:40:44 %S A135260 1,2,3,5,6,8,10,11,13,15,17,19,20,22,24,26,28,30,32,34,35,37,39,41,43, %T A135260 45,47,49,51,53,55,57,59,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88, %U A135260 90,92,94,96,98,100,101,103,105,107,109,111,113,115,117,119,121,123,125 %N A135260 Fibonacci Connell sequence: 1 odd, 1 even, 2 odd, 3 even, 5 odd, 8 even, .... %C A135260 This is to A049039 as Fibonacci numbers A000045 is to A000079 Powers of 2. %F A135260 F(1) of the odd numbers: a(n) = 2n+1 (A005408), followed by the next F(2) of the even numbers a(n) = 2n (A005843), followed by the next F(3) of the odd numbers, followed by the next F(4) of the even numbers and so forth, where F(n) = A000045(n). %Y A135260 Cf. A000045, A005408, A005843, A049039. %K A135260 easy,nonn %O A135260 1,2 %A A135260 _Jonathan Vos Post_, Dec 01 2007 %E A135260 Corrected by Avinoam Kalma, Jun 20 2010