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Search: id:A157196
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| A157196 |
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a(n)=(1/2)*(sum of elements of n-th run) using 1 and 2 starting with 1,1. |
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+0
1
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| 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1
(list; graph; listen)
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OFFSET
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1,3
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COMMENT
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We conjecture the density of 1 in the sequence approaches 2/3 as n-->infty.
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EXAMPLE
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Write the sums of elements in each run, you obtain: 2,2,4,2,2,2,2,4,2,2,4,2,2,4,4,...dividing by 2 you got : 1,1,2,1,1,1,1,2,1,1,2,1,1,2,2,... the sequence itself.
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CROSSREFS
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Cf. A000002, A157129
Sequence in context: A072170 A056624 A093997 this_sequence A063014 A097295 A083896
Adjacent sequences: A157193 A157194 A157195 this_sequence A157197 A157198 A157199
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KEYWORD
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more,nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 24 2009
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