A109325 - cp's OEIS frontend

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.

n	a(n)
1	1
2	5
3	19
4	13
5	211
6	7
7	2059
8	97
9	1009
10	11
11	175099
12	61
13	1586131
14	463
15	3571
16	6817
17	129009091
18	577
19	1161737179
20	4621
21	267331
22	35839
23	94134790219
24	5521
25	4015426801
26	320503
27	397760329
28	369181
29	68629840493971
30	7471
31	617671248800299
32	43112257

[1, 5, 19, 13, 211, 7, 2059, 97, 1009, 11, 175099, 61, 1586131, 463, 3571, 6817, 129009091, 577, 1161737179, 4621, 267331, 35839, 94134790219, 5521, 4015426801, 320503, 397760329, 369181, 68629840493971, 7471, 617671248800299, 43112257]

cp's OEIS Frontend

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.

Table of values

List of values