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A143770
Numbers n such that n, 2n, 3n are all highly composite numbers.
1
2, 12, 60, 120, 840, 2520, 5040, 27720, 55440, 110880, 166320, 720720, 1441440, 2162160, 3603600, 7207200, 10810800, 36756720, 61261200, 122522400, 183783600, 367567200, 698377680, 2327925600, 3491888400, 6983776800, 13967553600, 48886437600, 80313433200, 160626866400
OFFSET
1,1
LINKS
EXAMPLE
120 qualifies because all of 120, 240 and 360 are highly composite.
CROSSREFS
Cf. A002182.
Sequence in context: A001758 A037133 A009618 * A062478 A005430 A094434
KEYWORD
nonn
AUTHOR
J. Lowell, Aug 31 2008
EXTENSIONS
Extended by R. J. Mathar, Sep 12 2008
More terms from Amiram Eldar, Aug 27 2019
STATUS
approved