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Search: id:A077327
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| A077327 |
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Smallest number beginning with 2 and having exactly n distinct prime divisors. |
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+0
9
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| 2, 20, 204, 210, 2310, 200970, 2012010, 20030010, 223092870, 20090100030, 200560490130, 20055767721990, 2000029432190790, 20384767656323070, 2000848249650860610, 200001648981983238390, 2183473617971732996910
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OFFSET
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1,1
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EXAMPLE
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a(1) = 2, a(5) = 2310 = 2*3*5*7*11.
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CROSSREFS
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Cf. A077326, A077328, A077329, A077330, A077331, A077332, A077333, A077334.
Cf. A106411-A106419, A106421-A106429.
Sequence in context: A109107 A037729 A037624 this_sequence A067636 A000906 A127110
Adjacent sequences: A077324 A077325 A077326 this_sequence A077328 A077329 A077330
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 04 2002
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EXTENSIONS
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Correct a(2) and a(3), add a(6)-a(11) from Ray Chandler (rayjchandler(AT)sbcglobal.net), Apr 17 2005
More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), May 02 2005
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