A143588 Number of 2's in row n of the Kolakoski fan A143477.

0, 1, 2, 2, 3, 4, 6, 10, 15, 22, 33, 52, 74, 113, 168, 255, 377, 567, 850, 1280, 1916, 2878, 4324, 6473, 9720, 14577, 21862, 32766, 49150, 73758, 110640, 165962, 249013, 373405, 560201, 840358, 1260296, 1890539, 2835987, 4253676, 6380430, 9570746

Offset: 1

Author

Clark Kimberling, Aug 25 2008

Keywords

• nonn

Comments

A143586 = A143587 + A143588.

Examples

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

Crossrefs

Cf. A000002, A143477, A143486, A143487.