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A124058 Smallest of the first occurrence of n consecutive integers with all different prime signatures. 1
2, 3, 4, 6, 8, 23, 24, 1804, 1968, 8375, 53750, 243864, 639324, 41381620, 102621343, 7802708736, 7802708736, 178874468615, 1133934949368 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Essentially the same as A083790. - T. D. Noe, Nov 10 2006
a(18) > 10^11. - Donovan Johnson, Oct 24 2009
a(20) > 10^13. - Giovanni Resta, Jul 13 2015
LINKS
Eric Weisstein's World of Mathematics, Prime Signature.
EXAMPLE
a(6) = 23 because it begins the first occurrence of 6 consecutive integers that have all different prime signatures ({1}, {1,3}, {2}, {1,1}, {3}, {1,2} respectively for 23 through 28).
CROSSREFS
Sequence in context: A084074 A144722 A105808 * A274423 A118080 A136561
KEYWORD
nonn,more
AUTHOR
Joe McCauley (mccauleyj(AT)insightbb.com), Nov 03 2006
EXTENSIONS
a(12)-a(15) added from A083790, Nov 10 2006
a(16)-a(17) from Donovan Johnson, Oct 24 2009
a(18)-a(19) from Giovanni Resta, Jul 13 2015
STATUS
approved

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Last modified August 30 11:14 EDT 2024. Contains 375543 sequences. (Running on oeis4.)