Zsigmondy numbers for a = 5, b = 1: Zs(n, 5, 1) is the greatest divisor of 5^n - 1^n (A024049) that is relatively prime to 5^m - 1^m for all positive integers m < n.
A064081
Zsigmondy numbers for a = 5, b = 1: Zs(n, 5, 1) is the greatest divisor of 5^n - 1^n (A024049) that is relatively prime to 5^m - 1^m for all positive integers m < n.
Terms
- a(0) =4a(1) =3a(2) =31a(3) =13a(4) =781a(5) =7a(6) =19531a(7) =313a(8) =15751a(9) =521a(10) =12207031a(11) =601a(12) =305175781a(13) =13021a(14) =315121a(15) =195313a(16) =190734863281a(17) =5167a(19) =375601a(20) =196890121a(21) =8138021a(23) =390001a(25) =203450521a(27) =234750601a(29) =464881
External references
- oeis: A064081