A118517 Define sequence S_m by: initial term = m, reverse digits and add 3 to get next term. Entry shows S_1. This reaches a cycle of length 3 in 1 step.

1, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10, 4, 7, 10