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A143770
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Numbers n such that n, 2n, 3n are all highly composite numbers
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0
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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
(list; graph; refs; listen; history; internal format)
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