The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A161974 a(n) = number of equalities of the form A010060(n+k) = A010060(n), k=1,2,3. 1
 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS See comment to A161916. 3-a(n) is the number of equalities of kind A010060(n+k) = 1-A010060(n), k=1,2,3. LINKS Table of n, a(n) for n=0..61. PROG (PARI) a(n)=sum(k=1, 3, hammingweight(n)%2==hammingweight(n+k)%2) \\ Charles R Greathouse IV, Aug 20 2013 CROSSREFS Cf. A161916, A161890, A161824, A161817, A161674, A161673, A161639, A161641, A161627, A161579, A161580, A121539, A131323, A036554, A010060. Sequence in context: A227195 A111620 A111628 * A316190 A358236 A330738 Adjacent sequences: A161971 A161972 A161973 * A161975 A161976 A161977 KEYWORD nonn AUTHOR Vladimir Shevelev, Jun 23 2009 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 May 18 02:38 EDT 2024. Contains 372617 sequences. (Running on oeis4.)