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Search: id:A061558
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| A061558 |
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Smallest difference of an increasing arithmetic progression of n primes with the (conjectural) smallest possible first term A007918(n). |
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+0
6
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| 0, 1, 2, 6, 6, 30, 150, 1210230, 32671170, 224494620, 1536160080, 1482708889200, 9918821194590, 266029822978920, 266029822978920, 11358256064006271420, 341976204789992332560
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OFFSET
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1,3
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COMMENT
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Apart from the initial term, does this sequence coincide with A113461? - njas, Sep 22 2007
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LINKS
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Index entries for sequences related to primes in arithmetic progressions
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EXAMPLE
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For n = 10, the smallest difference a(10) = 224494620 with the first term 11 (= A007918(10)) producing an arithmetic progression of 10 primes.
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CROSSREFS
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Cf. A007918 (initial terms), A120302 (last terms), A130791 (triangle).
Sequence in context: A033188 A093364 A113461 this_sequence A123144 A069260 A056603
Adjacent sequences: A061555 A061556 A061557 this_sequence A061559 A061560 A061561
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KEYWORD
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nonn,hard
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AUTHOR
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Gennady Gusev (ggn(AT)rm.yaroslavl.ru), May 17, 2001
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EXTENSIONS
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a(16) and a(17) found by P. Carmody. - Gennady Gusev (gennady.gusev(AT)np-saturn.ru), Oct 07 2005
a(0) deleted by njas, Sep 22 2007
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