a(n) is the first prime p for which the absolute value of the difference between the numbers of distinct prime factors of p+1 and p-1 is exactly n.
A353123
a(n) is the first prime p for which the absolute value of the difference between the numbers of distinct prime factors of p+1 and p-1 is exactly n.
Terms
- a(0) =3a(1) =2a(2) =31a(3) =2309a(4) =8191a(5) =746129a(6) =16546531a(7) =300690389a(8) =11823922111a(9) =239378649509
External references
- oeis: A353123