References to A145079

Length of cycle of trajectory of n described in A098282, or -1 if no cycle is ever reached.
1, 1, 1, 1, 1, 4, 1, 4, 4, 4, 1, 4, 4, 1, 4, 1, 1, 1, 4, 4, 1, 4, 4, 1, 2, 1, 1, 1, 4, 4, 1, 1, 2, 1

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