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A033188
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Minimal difference of any increasing arithmetic progression of n primes.
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7
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0, 1, 2, 6, 6, 30, 150, 210, 210, 210, 2310, 2310, 30030, 30030, 30030, 30030, 510510, 510510, 9699690, 9699690, 9699690
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OFFSET
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1,3
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COMMENTS
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The entries shown have been proved to be correct.
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LINKS
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Table of n, a(n) for n=1..21.
Jens Kruse Andersen, Status of minimal arithmetic progressions of primes
Eric Weisstein's World of Mathematics, Prime Arithmetic Progression.
Index entries for sequences related to primes in arithmetic progressions
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FORMULA
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David W. Wilson conjectures that a(n) = n# (n primorial, A034386) for n >= 8. If this is true then a(22) onwards are: 9699690, 223092870, 223092870, 223092870, 223092870, 223092870, 223092870, 6469693230, 6469693230, ...
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CROSSREFS
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Cf. A033189 (initial terms), A113872 (last terms).
Cf. A034386, A204189.
Sequence in context: A284008 A284576 A060114 * A093364 A113461 A061558
Adjacent sequences: A033185 A033186 A033187 * A033189 A033190 A033191
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KEYWORD
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nonn,hard
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AUTHOR
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Eric W. Weisstein
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EXTENSIONS
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Entry revised Feb 02 2006 by N. J. A. Sloane, based on suggestions from Jens Kruse Andersen.
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STATUS
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approved
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