Zsigmondy numbers for a = 3, b = 2: Zs(n, 3, 2) is the greatest divisor of 3^n - 2^n (A001047) that is relatively prime to 3^m - 2^m for all positive integers m < n.

A109325

Zsigmondy numbers for a = 3, b = 2: Zs(n, 3, 2) is the greatest divisor of 3^n - 2^n (A001047) that is relatively prime to 3^m - 2^m for all positive integers m < n.

Terms

    a(0) =1a(1) =5a(2) =19a(3) =13a(4) =211a(5) =7a(6) =2059a(7) =97a(8) =1009a(9) =11a(10) =175099a(11) =61a(12) =1586131a(13) =463a(14) =3571a(15) =6817a(16) =129009091a(17) =577a(18) =1161737179a(19) =4621a(20) =267331a(21) =35839a(22) =94134790219a(23) =5521a(24) =4015426801a(25) =320503a(26) =397760329a(27) =369181a(29) =7471a(31) =43112257

External references