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Search: id:A058254
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| A058254 |
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LCM { p(i)-1, i=1..n}, where p() are the primes. |
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+0
4
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| 1, 2, 4, 12, 60, 60, 240, 720, 7920, 55440, 55440, 55440, 55440, 55440, 1275120, 16576560, 480720240, 480720240, 480720240, 480720240, 480720240, 480720240, 19709529840, 19709529840, 39419059680, 197095298400, 3350620072800
(list; graph; listen)
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OFFSET
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0,2
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EXAMPLE
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For n=5 and 6: a(5)=a(6)=LCM[1, 2, 4, 6, 10, 12]=60.
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CROSSREFS
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Cf. A002110, A005867, A003418, A000142, A000010, A006093, A058255.
Sequence in context: A000568 A128648 A128646 this_sequence A076244 A058255 A118456
Adjacent sequences: A058251 A058252 A058253 this_sequence A058255 A058256 A058257
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Dec 06 2000
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