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Search: id:A074292
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| A074292 |
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Dominant digit in successive groups of 3 from the Kolakoski sequence (A000002). |
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+0
2
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| 2, 1, 2, 2, 1, 1, 2, 1, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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This appears to be the same as a sequence studied by Claude Lenormand in a letter dated Nov 17 2003: break up the Kolakoski sequence (A000002) into runs of identical symbols and omit one symbol from each run.
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FORMULA
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a(n)=A000002(3n-2)+A000002(3n-1)+A000002(3n)-3. - Benoit Cloitre (benoit7848c(AT)orange.fr), Nov 15 2003
a(n)=A000002(A078649(n)) - Benoit Cloitre (benoit7848c(AT)orange.fr), Oct 16 2005
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EXAMPLE
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Kolakoski begins (1,2,2),(1,1,2),(1,2,2),(1,2,2), so this begins 2,1,2,2.
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CROSSREFS
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Sequence in context: A085028 A087888 A109494 this_sequence A156257 A097867 A075344
Adjacent sequences: A074289 A074290 A074291 this_sequence A074293 A074294 A074295
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KEYWORD
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nonn
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AUTHOR
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Jon Perry (perry(AT)globalnet.co.uk), Sep 21 2002
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EXTENSIONS
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More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 16 2003
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