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A101344
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Number of primes between prime(n) and 3prime(n).
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0
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2, 2, 3, 4, 6, 6, 8, 8, 10, 13, 13, 17, 17, 17, 19, 21, 23, 24, 27, 27, 26, 29, 30, 32, 36, 36, 36, 38, 37, 38, 44, 45, 47, 46, 51, 51, 54, 55, 56, 57, 58, 58, 62, 62, 62, 62, 68, 73, 74, 74, 74, 75, 75, 79, 81, 82, 82, 83, 86, 86, 85, 89, 94, 94, 94, 95, 100, 101, 106, 105, 106
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| a(1)=2 because between p=2 and 6 there are exactly two primes, 3
and 5.
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MATHEMATICA
| Table[ PrimePi[3Prime[n]] - n, {n, 70}]
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CROSSREFS
| Sequence in context: A118975 A087724 A152047 * A152048 A046934 A093594
Adjacent sequences: A101341 A101342 A101343 * A101345 A101346 A101347
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KEYWORD
| easy,nonn
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AUTHOR
| Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Dec 25 2004
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EXTENSIONS
| Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 25, 2004
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