a(n) is the largest term encountered on the path to 0 when iterating the map x -> x', and starting from x = A351255(n). Here x' means the arithmetic derivative of x, A003415.

A351261

a(n) is the largest term encountered on the path to 0 when iterating the map x -> x', and starting from x = A351255(n). Here x' means the arithmetic derivative of x, A003415.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =6a(4) =9a(5) =21a(6) =5a(7) =10a(8) =31a(9) =25a(10) =185a(11) =375a(12) =1075a(13) =12575a(14) =7a(15) =14a(16) =21a(17) =42a(18) =165a(19) =70a(20) =105a(21) =318a(22) =365a(23) =1905a(24) =5385a(25) =2175a(26) =2825a(27) =49a(28) =98a(29) =1281

External references