13 - 1 x 1 x 1 = 1, 23 - 2 x 2 x 2 = 8, 33 - 3 x 3 x 3 = 27, 43 - 4 x 4 x 4 = 64, 53 - 5 x 5 x 5 =125, 63 - 6 x 6 x 6 = 216,

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