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A072121 a(1) = 1; for n > 1, a(n) = smallest number > a(n-1) having at least n divisors. 1
1, 2, 4, 6, 12, 18, 24, 30, 36, 48, 60, 72, 120, 144, 168, 180, 240, 252, 336, 360, 420, 480, 504, 540, 720, 840, 900, 960, 1008, 1080, 1260, 1320, 1440, 1680, 1800, 1980, 2160, 2520, 2640, 2880, 3360, 3600, 3780, 3960, 4200, 4320, 4620, 4680, 5040, 6300 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See the question asked in A069654.

LINKS

Table of n, a(n) for n=1..50.

MATHEMATICA

lst={}; q=0; Do[If[Length[Divisors[n]]>q, AppendTo[lst, n]; q++ ], {n, 8!}]; lst (* Vladimir Joseph Stephan Orlovsky, Sep 27 2008 *)

CROSSREFS

Cf. A069654, A061799.

Sequence in context: A296505 A325283 A167706 * A175305 A171923 A060735

Adjacent sequences:  A072118 A072119 A072120 * A072122 A072123 A072124

KEYWORD

nonn

AUTHOR

Vladeta Jovovic, Jun 19 2002

STATUS

approved

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Last modified June 26 20:30 EDT 2019. Contains 324380 sequences. (Running on oeis4.)