A109348 - cp's OEIS frontend

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.

n	a(n)
1	4
2	5
3	79
4	29
5	4141
6	37
7	205339
8	1241
9	127639
10	341
11	494287399
12	2041
13	24221854021
14	82573
15	3628081
16	2885681
17	58157596211761
18	109117
19	2849723505777919
20	4871281
21	8607961321
22	197750389
23	6842186811484434379
24	5576881
25	80962848274370701

[4, 5, 79, 29, 4141, 37, 205339, 1241, 127639, 341, 494287399, 2041, 24221854021, 82573, 3628081, 2885681, 58157596211761, 109117, 2849723505777919, 4871281, 8607961321, 197750389, 6842186811484434379, 5576881, 80962848274370701]

cp's OEIS Frontend

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.

Table of values

List of values