A026535 a(n) = t(1+5n) where t = A001285 (Thue-Morse sequence).

2, 1, 2, 2, 2, 2, 2, 1, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 2, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 1, 1, 1, 1, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 1, 1, 2, 2, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 2, 1, 2

Offset: 0

Author

Clark Kimberling

Keywords

• nonn

Crossrefs

Cf. A001285, A026517.

Programs

PARI

a(n)=1+hammingweight(5*n+1)%2 \\ Charles R Greathouse IV, May 09 2016

Extensions

Name and Pari corrected by Sean A. Irvine, Oct 06 2019