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Search: id:A072072
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| A072072 |
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Least number initiating a chain of n consecutive numbers each of which has maximal prime exponent exactly 3. |
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+0
1
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OFFSET
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1,1
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COMMENT
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a(7) <= 30199064929748 ("=" if there are no bugs in my program), a(8) > 300000000000000 (unless there's a bug in my program). - Brad Chalfan (bradc(AT)hevanet.com), Nov 13 2002
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EXAMPLE
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m=2068373=17.17.17.421, m+1=2068374=2.3.7.11.11.11, m+2=2068375=37.5.5.5.16547, m+3=2068376=2.2.2.47.5501.
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CROSSREFS
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Cf. A071318-A071320, A071125.
Sequence in context: A003375 A007032 A069988 this_sequence A131927 A132869 A036915
Adjacent sequences: A072069 A072070 A072071 this_sequence A072073 A072074 A072075
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KEYWORD
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more,nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Jun 13 2002
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EXTENSIONS
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One more term from Don Reble (djr(AT)nk.ca), Jun 17 2002
a(6) <= 80566783622 from Don Reble, "=" from Brad Chalfan (bradc(AT)hevanet.com), Nov 13 2002
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