Zsigmondy numbers for a = 7, b = 3: Zs(n, 7, 3) is the greatest divisor of 7^n - 3^n that is relatively prime to 7^m - 3^m for all positive integers m < n.
A109348
Zsigmondy numbers for a = 7, b = 3: Zs(n, 7, 3) is the greatest divisor of 7^n - 3^n that is relatively prime to 7^m - 3^m for all positive integers m < n.
Terms
- a(0) =4a(1) =5a(2) =79a(3) =29a(4) =4141a(5) =37a(6) =205339a(7) =1241a(8) =127639a(9) =341a(10) =494287399a(11) =2041a(12) =24221854021a(13) =82573a(14) =3628081a(15) =2885681a(17) =109117a(19) =4871281a(20) =8607961321a(21) =197750389a(23) =5576881
External references
- oeis: A109348