A143587 Number of 1's in row n of the Kolakoski fan A143477.

1, 0, 0, 2, 3, 5, 7, 9, 14, 22, 33, 47, 77, 112, 170, 251, 384, 571, 855, 1275, 1919, 2873, 4305, 6480, 9706, 14569, 21861, 32819, 49201, 73743, 110619, 165937, 248848, 373469, 560078, 840122, 1260542, 1890595, 2835686, 4253984, 6380906, 9571020

Offset

1,4

Comments

A143586 = A143587 + A143588.

Links

Table of n, a(n) for n=1..42.

Example

The first 4 rows of A143477 are 1; 2; 22; 1122. The respective numbers of 1's are 1,0,0,2.

Crossrefs

Cf. A000002, A143477, A143486, A143588.

Sequence in context: A338360 A028378 A325833 * A096305 A039888 A036959

Adjacent sequences: A143584 A143585 A143586 * A143588 A143589 A143590

Keyword

nonn

Author

Clark Kimberling, Aug 25 2008

Status

approved