OFFSET
1,1
COMMENTS
First differences of A074273.
3 <= a(n) <= 6 for all n. - Nathaniel Johnston, May 02 2011
LINKS
Nathaniel Johnston, Table of n, a(n) for n = 1..10000
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
KEYWORD
nonn,easy
AUTHOR
Jon Perry, Sep 21 2002
STATUS
approved