3 x 1, 1, 3, 6, 3 x 2, 6, 3, 8, 3 x 3, 9, 6, 12, 3 x 4, 6, 14, 12, 3 x 5, 12, 15, 20, 3 x 6, 12, 18, 21, 3 x 7, 21, 20, 24, 3 x 8, 23, 27, 24, 3 x 9, 27, 28, 30, 3 x 10, 30, 3, 27

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