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A143590 Length of row n of A143589 (a Kolakoski fan). 3
1, 1, 2, 2, 3, 4, 7, 10, 16, 24, 36, 54, 80, 120, 180, 269, 404, 605, 908, 1361, 2041, 3063, 4591, 6890, 10333, 15509, 23259, 34901, 52344, 78516, 117762, 176636, 264944, 397405, 596099, 894193, 1341290, 2011935, 3017927, 4526825 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

COMMENTS

Conjecture (following Benoit Cloitre's conjecture at A111090):

if L=A143489, then L(n)*(2/3)^n approaches a constant.

EXAMPLE

The first 6 rows of A143589 are 1; 2; 1,1; 2,1; 1,1,2; 2,1,2,2. Their

lengths are 1,1,2,2,3,4.

CROSSREFS

Cf. A000002, A111090, A143477, A143586, A143489.

Sequence in context: A110160 A003179 A153934 * A059348 A110871 A173433

Adjacent sequences:  A143587 A143588 A143589 * A143591 A143592 A143593

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu), Aug 25 2008

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Last modified February 17 02:48 EST 2012. Contains 205978 sequences.