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Search: id:A113870
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| A113870 |
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Binary JIS for fraction 9/10. |
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+0
1
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| 1, 3, 7, 39, 103, 615, 1639, 9831, 26215, 157287, 419431, 2516583, 6710887, 40265319, 107374183, 644245095, 1717986919, 10307921511, 27487790695, 164926744167, 439804651111, 2638827906663, 7036874417767, 42221246506599
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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JIS[9/10, 2]
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EXAMPLE
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Binary expansion of 9/10 is periodic: 0.1,(1,1,0,0),(1,1,0,0)
position digit 1-> 1 2 3 6 7
we create binary JIS as partial sums of infinite sum 2^(n-1) where n is
position where digits 1 occured in binary expansion). First term:
2^(1-1)=1 Second term 2^(1-1)+2^(2-1)=3 Third term
2^(1-1)+2^(2-1)+2^(3-1)=7 etc.
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CROSSREFS
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Cf. A099974, A112627, A080355, A080567, A099969, A099970, A099971.
Sequence in context: A061931 A057203 A056250 this_sequence A074582 A105621 A018998
Adjacent sequences: A113867 A113868 A113869 this_sequence A113871 A113872 A113873
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KEYWORD
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nonn,uned
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Jan 27 2006
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