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A065688
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First prime in the smallest (nontrivial) prime k-tuplet.
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9
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2, 3, 5, 5, 5, 7, 11, 11, 11, 11, 11, 11, 11, 11, 11, 13, 13, 13, 13, 29, 29, 19, 19
(list;
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refs;
listen;
history;
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internal format)
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OFFSET
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1,1
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COMMENTS
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For a proper definition see the cross-references.
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LINKS
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EXAMPLE
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a(8): 11 13 17 19 23 29 31 37 are primes and 37-11=26=A008407(8).
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CROSSREFS
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Cf. A008407 (minimal difference of first and last prime in a prime k-tuplet), A023193 (prime k-tuplet conjectures), A047947 (Schinzel's rhobar), A020497.
Cf. A261324 (another variant including trivial tuplets).
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KEYWORD
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more,nonn
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AUTHOR
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EXTENSIONS
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a(1) prepended and a(20)-a(23) added by Max Alekseyev, Aug 15 2015
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STATUS
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approved
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