15 - 3, 6, 9, 12, 20 - 4, 8, 12, 16, 11 - 3, 5, 7, 9, 16 - 4, 7, 10, 13, 26 - 6, 11, 16, 21, 25 - 9, 13, 17, 21, 42 - 14, 21, 28, 35, 41 - 9, 17, 25, 33, 9 - 25, 21, 17, 13, -10 - 10, 5, 0, -5, , 2.5 - 0.5, 1, 1.5, 2, 36 - 1, 4, 9, 16, 25,

Number Sequences camb.grade5

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