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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
OFFSET
1,4
COMMENTS
EXAMPLE
The first 4 rows of A143477 are 1; 2; 22; 1122. The respective numbers of 1's are 1,0,0,2.
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Aug 25 2008
STATUS
approved