A143591 Number of 1's in row n of A143589 (a Kolakoski fan).
1, 0, 2, 1, 2, 1, 4, 4, 8, 12, 18, 28, 40, 60, 91, 134, 203, 302, 455, 681, 1019, 1535, 2292, 3447, 5157, 7759, 11617, 17458, 26172, 39270, 58888, 88328, 132483, 198711, 298005, 447096, 670645, 1005943, 1509029, 2263285
Offset: 1
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Examples
The first 6 rows of A143589 are 1; 2; 1,1; 2,1; 1,1,2; 2,1,2,2. The respective numbers of 1's are 1,0,2,1,2,1.
Comments