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A143041 10^n-th number divisible by exactly 3 distinct primes. 0
105, 455, 2988, 26128, 258764, 2677258, 28013887, 293553638, 3072062072, 32084334808 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 455, pp 94, Ellipses, Paris 2008.

LINKS

Table of n, a(n) for n=1..10.

FORMULA

a(n)=A033992(10^n).

CROSSREFS

Cf. A033992.

Sequence in context: A165060 A165069 A200834 * A078420 A152826 A133767

Adjacent sequences:  A143038 A143039 A143040 * A143042 A143043 A143044

KEYWORD

more,nonn

AUTHOR

Lekraj Beedassy, Jul 18 2008

EXTENSIONS

a(8)-a(10) from Donovan Johnson, Mar 30 2010

STATUS

approved

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Last modified June 20 17:15 EDT 2021. Contains 345178 sequences. (Running on oeis4.)