One of the basic cycles in the x->3x-1 (x odd) or x/2 (x even) problem.

Terms

a(0) =17a(1) =50a(2) =25a(3) =74a(4) =37a(5) =110a(6) =55a(7) =164a(8) =82a(9) =41a(10) =122a(11) =61a(12) =182a(13) =91a(14) =272a(15) =136a(16) =68a(17) =34a(18) =17a(19) =50a(20) =25a(21) =74a(22) =37a(23) =110a(24) =55a(25) =164a(26) =82a(27) =41a(28) =122a(29) =61