A255924 - cp's OEIS frontend

A255924 Bases b for which exactly three Wieferich primes p with p < b exist such that p is a base-b Wieferich prime.

n	a(n)
1	19
2	28
3	53
4	68
5	80
6	89
7	107
8	129
9	137
10	143
11	145
12	146
13	147
14	148
15	170
16	177
17	181
18	197
19	215
20	224
21	253
22	263
23	268
24	299
25	307
26	324
27	332
28	333
29	334
30	339
31	341
32	349
33	350
34	354
35	357
36	359
37	360
38	362
39	368
40	373
41	377
42	389
43	393
44	399
45	402
46	403
47	410
48	413
49	437
50	440
51	449
52	451
53	457

[19, 28, 53, 68, 80, 89, 107, 129, 137, 143, 145, 146, 147, 148, 170, 177, 181, 197, 215, 224, 253, 263, 268, 299, 307, 324, 332, 333, 334, 339, 341, 349, 350, 354, 357, 359, 360, 362, 368, 373, 377, 389, 393, 399, 402, 403, 410, 413, 437, 440, 449, 451, 457]

cp's OEIS Frontend

A255924 Bases b for which exactly three Wieferich primes p with p < b exist such that p is a base-b Wieferich prime.

Table of values

List of values

n	a(n)
1	19
2	28
3	53
4	68
5	80
6	89
7	107
8	129
9	137
10	143
11	145
12	146
13	147
14	148
15	170
16	177
17	181
18	197
19	215
20	224
21	253
22	263
23	268
24	299
25	307
26	324
27	332
28	333
29	334
30	339
31	341
32	349
33	350
34	354
35	357
36	359
37	360
38	362
39	368
40	373
41	377
42	389
43	393
44	399
45	402
46	403
47	410
48	413
49	437
50	440
51	449
52	451
53	457

n	a(n)
1	19
2	28
3	53
4	68
5	80
6	89
7	107
8	129
9	137
10	143
11	145
12	146
13	147
14	148
15	170
16	177
17	181
18	197
19	215
20	224
21	253
22	263
23	268
24	299
25	307
26	324
27	332
28	333
29	334
30	339
31	341
32	349
33	350
34	354
35	357
36	359
37	360
38	362
39	368
40	373
41	377
42	389
43	393
44	399
45	402
46	403
47	410
48	413
49	437
50	440
51	449
52	451
53	457

n	a(n)
1	19
2	28
3	53
4	68
5	80
6	89
7	107
8	129
9	137
10	143
11	145
12	146
13	147
14	148
15	170
16	177
17	181
18	197
19	215
20	224
21	253
22	263
23	268
24	299
25	307
26	324
27	332
28	333
29	334
30	339
31	341
32	349
33	350
34	354
35	357
36	359
37	360
38	362
39	368
40	373
41	377
42	389
43	393
44	399
45	402
46	403
47	410
48	413
49	437
50	440
51	449
52	451
53	457