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Search: id:A161555
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| A161555 |
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Numerators of sequence of fractions of primes that minimize absolute value of difference between the fractions and 1/4. For n = 2, there are two primes available for use in numerator or denominator: 2,3. The best approximation to 1/4 is 2/3. Sequence begins at n = 2. |
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+0
1
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| 2, 2, 2, 3, 3, 3, 5, 5, 7, 7, 7, 7, 11, 11, 13
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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For n=2, there are two primes available to approximate 1/4. The closest fraction in absolute value is 2/3. The first few approximating fractions are: 2/3, 2/5, 2/7, 3/11, 3/13,...
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CROSSREFS
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Sequence in context: A108711 A029059 A035449 this_sequence A029058 A046026 A139801
Adjacent sequences: A161552 A161553 A161554 this_sequence A161556 A161557 A161558
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KEYWORD
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nonn
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AUTHOR
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Daniel Tisdale (daniel6874(AT)gmail.com), Jun 13 2009
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