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Search: id:A120927
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| 4, 3, 3, 2, 2, 2, 3, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 2, 2, 3, 3, 2, 3, 3, 2, 2, 2, 3, 3, 3, 2, 3, 3, 3, 3, 3, 3
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The ratio is an integer for n = 1, 2, 3, 11, 43, 53, ...
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FORMULA
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a(n) = floor[A001358(n)/n].
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EXAMPLE
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a(1) = floor[4/1] = 4 because 4 is the first semiprime.
a(2) = floor[6/2] = 3 because 6 is the second semiprime.
a(3) = floor[9/3] = 3 because 9 is the third semiprime.
a(4) = floor[10/4] = 2 because 4 is the fourth semiprime.
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CROSSREFS
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Cf. A001358.
Sequence in context: A129624 A019975 A073871 this_sequence A117323 A016502 A117691
Adjacent sequences: A120924 A120925 A120926 this_sequence A120928 A120929 A120930
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KEYWORD
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easy,nonn
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AUTHOR
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Jonathan Vos Post (jvospost2(AT)yahoo.com), Aug 18 2006
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