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Search: id:A097212
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| A097212 |
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Numbers n such that A076078(n) > A076078(m) for all m < n, A076078(n) being the number of sets of distinct positive integers with a least common multiple of n. |
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+0
2
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| 1, 2, 4, 6, 12, 24, 30, 36, 48, 60, 120, 180, 240, 360, 420, 720, 840, 1260, 1680, 2520, 4620, 5040, 7560, 9240, 10080, 12600, 13860, 15120, 18480, 20160, 25200, 27720, 45360, 50400, 55440, 83160, 110880, 138600, 166320, 221760, 277200, 332640
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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RECORDS transform of A076078. All highly composite numbers (A002182) are members. All members belong to A025487 and A067128.
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MATHEMATICA
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f[n_] := Block[{d = Divisors[n]}, Plus @@ (MoebiusMu[n/d](2^DivisorSigma[0, d] - 1))]; b = 0; l = {}; Do[c = a[n]; If[c > b, b = c; AppendTo[l, n]], {n, 10^6}]; l (from Robert G. Wilson v Aug 13 2004)
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CROSSREFS
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Sequence in context: A073349 A129301 A066523 this_sequence A126098 A018894 A056795
Adjacent sequences: A097209 A097210 A097211 this_sequence A097213 A097214 A097215
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KEYWORD
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nonn
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AUTHOR
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Matthew Vandermast (ghodges14(AT)comcast.net), Aug 07 2004
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 13 2004
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