56.
0.5, 0.55, 0.65,0.8,?

57.
0, 2, 3, 5, 8, 10, 15, 17, 24, 26, ?

59.
5, 2, 7, 9, 16, 25, ?

60.
7, 26, 63, 124, 215, 342, ?

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