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Search: id:A090951
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| A090951 |
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LCM of the first n numbers of the form p^q, where p and q are 1 or prime. |
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+0
1
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| 1, 2, 6, 12, 60, 420, 840, 2520, 27720, 360360, 6126120, 116396280, 2677114440, 13385572200, 40156716600, 1164544781400, 36100888223400, 144403552893600, 5342931457063200, 219060189739591200, 9419588158802421600
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Is the sum of the series 1/a(n) transcendental?
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EXAMPLE
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a(11) = 6126120 = 1*2*3*2*5*7*2*3*11*13*17.
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CROSSREFS
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Cf. A051451.
Sequence in context: A048803 A068625 A051451 this_sequence A085819 A069047 A095921
Adjacent sequences: A090948 A090949 A090950 this_sequence A090952 A090953 A090954
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KEYWORD
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easy,nonn
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AUTHOR
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Russell A. Easterly (logiclab(AT)comcast.net), Feb 26 2004
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EXTENSIONS
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Edited and extended by David Wasserman (dwasserm(AT)earthlink.net), Mar 13 2006
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