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Search: id:A034173
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| A034173 |
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a(n) is minimal such that prime factorizations of a(n), ..., a(n)+n-1 have same exponents. |
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+0
8
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OFFSET
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1,2
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COMMENT
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a(7) <= 1091100709673
a(7) <= 464881210073. - David Wasserman (dwasserm(AT)earthlink.net), Jan 08 2006
a(8) > 10^13. [From Donovan Johnson (donovan.johnson(AT)yahoo.com), Oct 20 2009]
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FORMULA
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a(n) = A034174(n) - n + 1. [From Max Alekseyev (maxale(AT)gmail.com), Nov 10 2009]
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EXAMPLE
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a(4)=19940 because 19940, ..., 19943 all have the form p^2 q r.
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CROSSREFS
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Cf. A034174.
Cf. A006558, A083790.
Sequence in context: A113105 A132567 A083459 this_sequence A132519 A117969 A003820
Adjacent sequences: A034170 A034171 A034172 this_sequence A034174 A034175 A034176
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KEYWORD
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hard,nonn,new
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AUTHOR
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Dean Hickerson (dean.hickerson(AT)yahoo.com), Oct 01 1998
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EXTENSIONS
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a(7) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Oct 20 2009
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