Least positive integer solution k to h(k) = n h(k-1), where h(n) is the length of n, f(n), f(f(n)), ...., 1 in the Collatz (or 3x + 1) problem. (The earliest "1" is meant.)
A078421
Least positive integer solution k to h(k) = n h(k-1), where h(n) is the length of n, f(n), f(f(n)), ...., 1 in the Collatz (or 3x + 1) problem. (The earliest "1" is meant.)
Terms
- a(0) =13a(1) =2a(2) =105a(3) =3a(4) =9a(5) =1742a(6) =1961a(7) =1705a(8) =161a(9) =11945a(10) =68718937a(11) =36453025a(12) =411755350a(13) =3222597649a(14) =2808250369a(15) =14913078
External references
- oeis: A078421