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Search: id:A118747
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| A118747 |
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a(n) = product[k=1..n] P(k), where P(k) is the largest prime <= 2*k. a(n) = product[k=1..n] A060308(k). |
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+0
5
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| 2, 6, 30, 210, 1470, 16170, 210210, 2732730, 46456410, 882671790, 16770764010, 385727572230, 8871734161290, 204049885709670, 5917446685580430, 183440847252993330, 5686666264842793230, 176286654210126590130
(list; graph; listen)
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OFFSET
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1,1
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CROSSREFS
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Cf. A020482, A049653, A060266-A060268, A060264, A060265, A060308, A118455, A118456, A118748.
Sequence in context: A078700 A104561 A127482 this_sequence A129779 A068215 A096775
Adjacent sequences: A118744 A118745 A118746 this_sequence A118748 A118749 A118750
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KEYWORD
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easy,nonn
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AUTHOR
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Jonathan Vos Post (jvospost3(AT)gmail.com), Apr 29 2006
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