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A074274
Gaps between even number of 1's in the Kolakoski sequence A000002.
2
3, 6, 3, 4, 3, 5, 3, 3, 6, 3, 5, 3, 4, 4, 5, 4, 3, 5, 3, 6, 3, 6, 3, 4, 3, 5, 4, 3, 5, 3, 4, 3, 3, 6, 3, 5, 4, 5, 3, 4, 4, 5, 3, 3, 5, 3, 4, 3, 5, 3, 6, 3, 6, 3, 3, 4, 3, 6, 3, 5, 3, 4, 3, 3, 6, 3, 5, 3, 3, 6, 3, 5, 3, 4, 5, 4, 4, 5, 4, 3, 5, 3, 6, 3, 5, 4, 4
OFFSET
1,1
COMMENTS
First differences of A074273.
3 <= a(n) <= 6 for all n. - Nathaniel Johnston, May 02 2011
LINKS
EXAMPLE
The Kolakoski sequence begins: 1,2,2,1,1,2,1,2,2,1,2,2,1,1,..., which has an even numbers of 1's (A074273) at 4, 7, 13, so the gaps are 3 and 6.
CROSSREFS
Cf. A074273.
Sequence in context: A155503 A010619 A019715 * A111461 A111762 A185582
KEYWORD
nonn,easy
AUTHOR
Jon Perry, Sep 21 2002
STATUS
approved