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A106424 Smallest number beginning with 4 and having exactly n prime divisors counted with multiplicity. 1
41, 4, 42, 40, 48, 400, 432, 4000, 4032, 40000, 4608, 4096, 41472, 40960, 49152, 409600, 442368, 4063232, 4128768, 40310784, 4718592, 4194304, 42467328, 41943040, 411041792, 419430400, 452984832, 402653184, 4076863488, 4026531840 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..30.

EXAMPLE

a(1) = 41, a(3) = 42 = 2*3*7.

CROSSREFS

Cf. A077326-A077334, A106411-A106419, A106421-A106429.

Sequence in context: A051317 A036189 A198190 * A126636 A095188 A215540

Adjacent sequences:  A106421 A106422 A106423 * A106425 A106426 A106427

KEYWORD

base,nonn

AUTHOR

Ray Chandler, May 02 2005

STATUS

approved

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Last modified July 15 23:32 EDT 2020. Contains 335774 sequences. (Running on oeis4.)