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 A143579 #10 Sep 08 2013 13:31:27 %S A143579 1,0,2,3,4,5,7,6,8,9,11,10,13,12,14,15,16,17,19,18,21,20,22,23,25,24, %T A143579 26,27,28,29,31,30,32,33,35,34,37,36,38,39,41,40,42,43,44,45,47,46,49, %U A143579 48,50,51,52,53,55,54,56,57,59,58,61,60,62,63,64,65,67,66,69,68,70,71,73 %N A143579 Permutation of the natural numbers (0,1,2,3,...): Odious numbers (A000069) interleaved with Evil numbers (A001969). %C A143579 This is the lodumo_2 of the Thue-Morse sequence A010059, where lodumo_k of sequences is defined in A159970. [_Philippe Deléham_, Apr 29 2009] %F A143579 Antidiagonals of an array, Odious numbers (A000069) in row 1 and Evil numbers (A001969) in row 2: 1, 2, 4, 7, 8, 11, 13,... 0, 3, 5, 6, 9, 10, 12,... %Y A143579 Cf. A000069, A001969, A160017. %K A143579 nonn %O A143579 0,3 %A A143579 _Gary W. Adamson_, Aug 24 2008 %E A143579 Extended by _R. J. Mathar_, Sep 05 2008 %E A143579 Edited by _R. J. Mathar_, Feb 04 2010