The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A091855 Odious numbers (see A000069) in A003159. 16
 1, 4, 7, 11, 13, 16, 19, 21, 25, 28, 31, 35, 37, 41, 44, 47, 49, 52, 55, 59, 61, 64, 67, 69, 73, 76, 79, 81, 84, 87, 91, 93, 97, 100, 103, 107, 109, 112, 115, 117, 121, 124, 127, 131, 133, 137, 140, 143, 145, 148, 151, 155, 157, 161, 164, 167, 171, 173, 176, 179, 181 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Also n such that A033485(n) == 1 (mod 4); see A007413. Also n such that A029883(n-1) = 1, A036577(n-1) = 2, A036585(n-1) = 3. - Philippe Deléham, Mar 25 2004 The number of odd numbers before the n-th even number in this sequence is a(n). - Philippe Deléham, Mar 27 2004 Numbers n such that {A010060(n-1), A010060(n)}={0,1} where A010060 is the Thue-Morse sequence. - Benoit Cloitre, Jun 16 2006 Positive integers not of the form n+A010060(n). - Jeffrey Shallit, Feb 13 2024 LINKS G. C. Greubel, Table of n, a(n) for n = 1..10000 Aviezri S. Fraenkel, The vile, dopey, evil and odious game players, Discrete Math. 312 (2012), no. 1, 42-46. Index entries for 2-automatic sequences. FORMULA a(n) = A003159(2n-1) = A036554(2n-1)/2. a(n) is asymptotic to 3*n - Benoit Cloitre, Mar 22 2004 A050292(a(n)) = 2n - 1. - Philippe Deléham, Mar 26 2004 MATHEMATICA A036554 := Select[Range[70500], OddQ[IntegerExponent[#, 2]] &]; Table[ A036554[[2*n - 1]]/2, {n, 1, 100}] (* G. C. Greubel, Jan 14 2018 *) PROG (PARI) is(n)=hammingweight(n)%2 && valuation(n, 2)%2==0 \\ Charles R Greathouse IV, May 09 2016 CROSSREFS Sequence in context: A345347 A310720 A310721 * A191404 A288374 A308199 Adjacent sequences: A091852 A091853 A091854 * A091856 A091857 A091858 KEYWORD easy,nonn AUTHOR Philippe Deléham, Mar 16 2004 EXTENSIONS More terms from Benoit Cloitre, Mar 22 2004 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 12 20:35 EDT 2024. Contains 375854 sequences. (Running on oeis4.)