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Search: id:A063763
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| A063763 |
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Nonprimes n such that largest prime factor of n > sqrt(n). |
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+0
6
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| 6, 10, 14, 15, 20, 21, 22, 26, 28, 33, 34, 35, 38, 39, 42, 44, 46, 51, 52, 55, 57, 58, 62, 65, 66, 68, 69, 74, 76, 77, 78, 82, 85, 86, 87, 88, 91, 92, 93, 94, 95, 99, 102, 104, 106, 110, 111, 114, 115, 116, 117, 118, 119, 122, 123, 124, 129, 130, 133, 134, 136, 138
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,1000
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MATHEMATICA
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Select[ Range[ 2, 160 ], !PrimeQ[ # ] && FactorInteger[ # ] [[ -1, 1 ] ] > Sqrt[ # ] & ]
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PROGRAM
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(PARI) { n=0; for (m=2, 10^9, f=vecmax(component(factor(m), 1)); if(!isprime(m) && f^2 > m, write("b063763.txt", n++, " ", m); if (n==1000, break)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 30 2009]
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CROSSREFS
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Cf. A063538, A063539, A063762.
Sequence in context: A080364 A082092 A069116 this_sequence A115956 A066073 A067582
Adjacent sequences: A063760 A063761 A063762 this_sequence A063764 A063765 A063766
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 14 2001
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