Number of steps to fixed point of "k -> k/2 or (k-1)/2 until result is prime", starting with prime(n)-1.
A039642
Number of steps to fixed point of "k -> k/2 or (k-1)/2 until result is prime", starting with prime(n)-1.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =2a(4) =2a(5) =3a(6) =4a(7) =4a(8) =2a(9) =3a(10) =3a(11) =5a(12) =4a(13) =4a(14) =2a(15) =3a(16) =2a(17) =4a(18) =6a(19) =3a(20) =6a(21) =3a(22) =2a(23) =4a(24) =6a(25) =6a(26) =6a(27) =2a(28) =4a(29) =5
External references
- oeis: A039642