A039977 An example of a d-perfect sequence.

1, 2, 0, 0, 1, 1, 2, 1, 1, 0, 1, 2, 2, 0, 0, 1, 0, 2, 2, 1, 0, 0, 2, 2, 1, 2, 0, 0, 1, 2, 2, 0, 0, 1, 0, 0, 2, 0, 1, 1, 2, 2, 0, 2, 1, 1, 0, 2, 2, 1, 1, 0, 1, 1, 2, 1, 0, 0, 2, 2, 1, 2, 2, 0, 2, 1, 1, 0, 0, 2, 0, 1, 1, 2, 0, 0, 1, 1, 2, 1, 1, 0, 1, 2, 2, 0, 0, 1, 0, 0, 2, 0, 1, 1, 2, 2, 0, 2, 1, 1, 0, 2, 2, 1, 1

Offset

1,2

Links

Table of n, a(n) for n=1..105.

D. Kohel, S. Ling and C. Xing, Explicit Sequence Expansions, in Sequences and their Applications, C. Ding, T. Helleseth, and H. Niederreiter, eds., Proceedings of SETA'98 (Singapore, 1998), 308-317, 1999. DOI: 10.1007/978-1-4471-0551-0_23

Formula

a(n) = ((-1)^(n+1)*A052709(n)) mod 3. - Christian G. Bower, Jun 12 2005

Crossrefs

Sequence in context: A350871 A052154 A360002 * A197548 A029403 A007706

Adjacent sequences: A039974 A039975 A039976 * A039978 A039979 A039980

Keyword

nonn

Author

N. J. A. Sloane.

Extensions

More terms from Christian G. Bower, Jun 12 2005

Status

approved