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A144769
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Floor( prime(n)/3 ).
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2
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0, 1, 1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 17, 19, 20, 22, 23, 24, 26, 27, 29, 32, 33, 34, 35, 36, 37, 42, 43, 45, 46, 49, 50, 52, 54, 55, 57, 59, 60, 63, 64, 65, 66, 70, 74, 75, 76, 77, 79, 80, 83, 85, 87, 89, 90, 92, 93, 94, 97, 102, 103, 104, 105, 110, 112, 115, 116
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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FORMULA
| a(n)=floor(A000040(n)/3). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 21 2008
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MAPLE
| A144769 := proc(n) floor(ithprime(n)/3); end; # R. J. Mathar, Sep 21 2008
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MATHEMATICA
| Quotient[Prime[Range[5! ]], 3]
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PROG
| (PARI) a(n)=prime(n)\3 \\ Charles R Greathouse IV, Oct 05 2011
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CROSSREFS
| See A130290 for prime(n)/2 or A075518 for prime(n)/4.
Sequence in context: A125299 A063949 A073518 * A165737 A033104 A191325
Adjacent sequences: A144766 A144767 A144768 * A144770 A144771 A144772
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KEYWORD
| nonn,easy
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AUTHOR
| Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 20 2008
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EXTENSIONS
| Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 21 2008
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