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A106421 Smallest number beginning with 1 and having exactly n prime divisors counted with multiplicity. 27
1, 11, 10, 12, 16, 108, 144, 128, 1296, 1152, 1024, 10368, 10240, 12288, 16384, 110592, 147456, 131072, 1327104, 1179648, 1048576, 10616832, 10485760, 12582912, 16777216, 113246208, 100663296, 134217728, 1006632960, 1207959552 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

EXAMPLE

a(0) = 1, a(5) = 108 = 2^2*3^3.

CROSSREFS

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

Sequence in context: A086100 A182782 A004283 * A019329 A086919 A060982

Adjacent sequences:  A106418 A106419 A106420 * A106422 A106423 A106424

KEYWORD

base,nonn

AUTHOR

Ray Chandler (rayjchandler(AT)sbcglobal.net), May 02 2005

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Last modified February 13 22:36 EST 2012. Contains 205567 sequences.