login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A143587 Number of 1's in row n of the Kolakoski fan A143477. 4
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 (list; graph; refs; listen; history; text; internal format)
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: A218614 A028378 A325833 * A096305 A039888 A036959

Adjacent sequences:  A143584 A143585 A143586 * A143588 A143589 A143590

KEYWORD

nonn

AUTHOR

Clark Kimberling, Aug 25 2008

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 8 02:24 EDT 2020. Contains 335503 sequences. (Running on oeis4.)