A174664 Sequence given by: a(0)=1, a(1)=2, and the formula a(n)=a(abs(floor((1/3)*n-a(n-2)))) for n>=2.

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

Offset

0,2

Links

Table of n, a(n) for n=0..104.

Example

a(2)=a(abs(floor(-2/3)))=a(1)=2. a(3)=a(abs(1-a(1)))=a(1)=2. a(4)=a(abs(floor(4/3-2)))=a(1)=2. a(5)=a(abs(floor(5/3-a(3))))=a(1)=2. a(6)=a(2-a(4))=a(0)=1.

Crossrefs

Cf. A174353.

Sequence in context: A037813 A159700 A083534 * A027386 A102300 A359511

Adjacent sequences: A174661 A174662 A174663 * A174665 A174666 A174667

Keyword

easy,nonn

Author

Richard Choulet, Mar 26 2010

Status

approved