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Search: id:A074783
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| A074783 |
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Floor(1/sin(x(n))) where x(n) is Pi truncated at the n-th decimal digit. |
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1
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| 7, 24, 627, 1687, 10792, 376847, 1530011, 18660269, 278567575, 1695509434, 11136696004, 102111268281, 1260654956981, 10725187563685, 308788493220129, 4193528956200935, 25999253094360135, 118166387818704584
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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a(n+1)=a(n) for some values of n as n=31,49,53,64,70,76,84,96,105,115,120,127...
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FORMULA
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Is there a formula for lim n -> infinity log(a(n))/n >=2 ?
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EXAMPLE
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x(4)=3.1415 and 1/sin(x(4))=10792.889... hence a(4)=10792
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PROGRAM
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(PARI) a(n)=floor(1/sin(floor(Pi*10^n)/10^n))
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CROSSREFS
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Sequence in context: A012761 A009652 A012777 this_sequence A065658 A034125 A075926
Adjacent sequences: A074780 A074781 A074782 this_sequence A074784 A074785 A074786
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KEYWORD
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nonn,base
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), Sep 07 2002
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