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Search: id:A099993
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| 2, 6, 12, 24, 32, 48, 64, 96, 128, 180, 210, 240, 288, 384, 432, 512, 720, 840, 900, 1024, 1152, 1296, 1536, 1728, 1920, 2160, 2310, 2592, 3072, 3456, 3840, 4320, 4620, 5184, 5760, 6300, 6720, 7200, 7680, 8192, 9216, 10080, 10800, 12288, 12960, 13824, 14400
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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A025487: least integer of each prime signature; also products of primorial numbers A002110. - Robert G. Wilson v (rgwv(at)rgwv.com), Dec 14 2005
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MATHEMATICA
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PrimeExponents[n_] := Last /@ FactorInteger@n; lpe = {}; ln = {1}; Do[ pe = Sort@PrimeExponents@n; If[FreeQ[lpe, pe], AppendTo[lpe, pe]; AppendTo[ln, n]], {n, 15000}]; ln[[2# ]] & /@ Range@(Length@ln/2) (* Robert G. Wilson v *)
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CROSSREFS
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Cf. A099992.
Adjacent sequences: A099990 A099991 A099992 this_sequence A099994 A099995 A099996
Sequence in context: A058868 A129314 A137895 this_sequence A011778 A067718 A028923
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KEYWORD
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nonn,easy
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AUTHOR
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njas, Nov 20 2004
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(at)rgwv.com), Dec 14 2005
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