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Search: id:A087005
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| 1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 70, 77, 105, 110, 154, 165, 210, 231, 330, 385, 462, 770, 1155, 2310
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OFFSET
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1,2
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COMMENT
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2310 = 11# = A002110(5);
divisors of 2310 are square-free (A005117) and 11-smooth;
a(A000005(2310)) = a(32) = 2310 is the last term.
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LINKS
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Eric Weisstein's World of Mathematics, Primorial
Eric Weisstein's World of Mathematics, Divisor
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CROSSREFS
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Cf. A018255, A018336, A087006, A087007, A087008.
Sequence in context: A078135 A073328 A119988 this_sequence A032892 A031941 A043089
Adjacent sequences: A087002 A087003 A087004 this_sequence A087006 A087007 A087008
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KEYWORD
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nonn,fini,full
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 29 2003
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