Numbers n for which one step of the Collatz iteration (3n+1)/2^r gives rise to values 59,53,47,41,35,29,23,17,11 and 5 for r=1,3,5,..,19.

A072253

Numbers n for which one step of the Collatz iteration (3n+1)/2^r gives rise to values 59,53,47,41,35,29,23,17,11 and 5 for r=1,3,5,..,19.

Terms

    a(0) =39a(1) =141a(2) =501a(3) =1749a(4) =5973a(5) =19797a(6) =62805a(7) =185685a(8) =480597a(9) =873813

External references