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A097212 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. 3
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; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

RECORDS transform of A076078. All highly composite numbers (A002182) are members. All members belong to A025487 and A067128.

LINKS

Table of n, a(n) for n=1..42.

MATHEMATICA

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 (* Robert G. Wilson v, Aug 13 2004 *)

CROSSREFS

Cf. A140999 (intersection of A025487 and A067128). - Matthew Vandermast, Oct 11 2008

Sequence in context: A073349 A129301 A066523 * A266228 A265719 A126098

Adjacent sequences:  A097209 A097210 A097211 * A097213 A097214 A097215

KEYWORD

nonn

AUTHOR

Matthew Vandermast, Aug 07 2004

EXTENSIONS

More terms from Robert G. Wilson v, Aug 13 2004

STATUS

approved

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Last modified December 5 03:20 EST 2016. Contains 278755 sequences.