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A079729
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Kolakoski variation using (1,2,3) starting with 1,2.
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1
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1, 2, 2, 3, 3, 1, 1, 1, 2, 2, 2, 3, 1, 2, 3, 3, 1, 1, 2, 2, 3, 3, 3, 1, 2, 2, 3, 3, 3, 1, 1, 1, 2, 3, 1, 1, 2, 2, 3, 3, 3, 1, 1, 1, 2, 2, 2, 3, 1, 1, 2, 2, 3, 3, 3, 1, 1, 1, 2, 2, 2, 3, 1, 2, 3, 3, 1, 1, 1, 2, 3, 1, 1, 2, 2, 3, 3, 3, 1, 1, 1, 2, 2, 2, 3, 1, 2, 3, 3, 1, 1, 2, 2, 3, 3, 3, 1, 2, 3, 3, 1, 1, 2, 2, 2
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| a(1)=1 then a(n) is the length of n-th run.
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FORMULA
| Partial sum sequence is expected to be asymptotic to 2*n.
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EXAMPLE
| Sequence begins: 1,2,2,3,3,1,1,1,2,2,2,3,1,2,3,3,1,1,2,2, read it as: (1), (2,2), (3,3), (1,1,1), (2,2,2), (3), (1), (2), (3,3), (1,1),... then count the terms in parentheses to get: 1,2,2,3,3,1,1,1,2,2,.. which is the same sequence.
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PROG
| (PARI) a=[1, 2, 2]; for(n=3, 100, for(i=1, a[n], a=concat(a, 1+((n-1)%3)))); a; [From Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 13 2009]
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CROSSREFS
| Cf. A000002.
Sequence in context: A164089 A068460 A143797 * A071859 A135695 A105899
Adjacent sequences: A079726 A079727 A079728 * A079730 A079731 A079732
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KEYWORD
| nonn
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 17 2003
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EXTENSIONS
| More terms from Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Sep 24 2006
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