OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..10000
FORMULA
A071295(a(n)) is odd. - Reinhard Zumkeller, Aug 09 2014
MATHEMATICA
Select[Range[200], EvenQ[IntegerLength[#, 2]]&&OddQ[DigitCount[#, 2, 1]]&] (* Harvey P. Dale, Oct 16 2012 *)
PROG
(PARI) is(n)=hammingweight(n)%2 && hammingweight(bitneg(n, #binary(n)))%2 \\ Charles R Greathouse IV, Mar 26 2013
(Haskell)
a059011 n = a059011_list !! (n-1)
a059011_list = filter (odd . a071295) [0..]
-- Reinhard Zumkeller, Aug 09 2014
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Patrick De Geest, Dec 15 2000
STATUS
approved