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A246548 Start of the least 5-tuple of consecutive squarefree numbers each of which has exactly n distinct prime factors. 3
462807341, 115, 6302, 294590, 106985762 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
By "consecutive squarefree numbers" we mean consecutive terms of A005117, not consecutive integers that also happen to be squarefree.
LINKS
EXAMPLE
462807341, 462807343, 462807347, 462807349, and 462807353 are the smallest 5 primes that are also consecutive squarefree numbers, so a(1) = 462807341.
115, 118, 119, 122, and 123 are the smallest 5 semiprimes that are also consecutive squarefree numbers, so a(2) = 115.
6302, 6303, 6305, 6306, and 6307 is the smallest 5-tuple of consecutive squarefree numbers each of which has exactly 3 prime factors, so a(3) = 6302.
CROSSREFS
Cf. A005117, A242621 (triple version), A246470 (quadruplet version), A246471.
Sequence in context: A286846 A349747 A323653 * A260524 A091677 A147717
KEYWORD
nonn
AUTHOR
Hans Havermann, Aug 29 2014
STATUS
approved

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Last modified April 12 07:22 EDT 2024. Contains 371623 sequences. (Running on oeis4.)