A306117 - cp's OEIS frontend

A306117 Largest k such that 7^k has exactly n digits 0 (in base 10), conjectured.

n	a(n)
0	35
1	51
2	93
3	58
4	122
5	74
6	108
7	131
8	118
9	152
10	195
11	192
12	236
13	184
14	247
15	243
16	254
17	286
18	325
19	292
20	318
21	336
22	375
23	393
24	339
25	431
26	327
27	433
28	485
29	447
30	456
31	455
32	448
33	492
34	452
35	507
36	489
37	541
38	526
39	605
40	627
41	706
42	730
43	628
44	665
45	660
46	798
47	715
48	704
49	633
50	728

[35, 51, 93, 58, 122, 74, 108, 131, 118, 152, 195, 192, 236, 184, 247, 243, 254, 286, 325, 292, 318, 336, 375, 393, 339, 431, 327, 433, 485, 447, 456, 455, 448, 492, 452, 507, 489, 541, 526, 605, 627, 706, 730, 628, 665, 660, 798, 715, 704, 633, 728]

cp's OEIS Frontend

A306117 Largest k such that 7^k has exactly n digits 0 (in base 10), conjectured.

Table of values

List of values

n	a(n)
0	35
1	51
2	93
3	58
4	122
5	74
6	108
7	131
8	118
9	152
10	195
11	192
12	236
13	184
14	247
15	243
16	254
17	286
18	325
19	292
20	318
21	336
22	375
23	393
24	339
25	431
26	327
27	433
28	485
29	447
30	456
31	455
32	448
33	492
34	452
35	507
36	489
37	541
38	526
39	605
40	627
41	706
42	730
43	628
44	665
45	660
46	798
47	715
48	704
49	633
50	728

n	a(n)
0	35
1	51
2	93
3	58
4	122
5	74
6	108
7	131
8	118
9	152
10	195
11	192
12	236
13	184
14	247
15	243
16	254
17	286
18	325
19	292
20	318
21	336
22	375
23	393
24	339
25	431
26	327
27	433
28	485
29	447
30	456
31	455
32	448
33	492
34	452
35	507
36	489
37	541
38	526
39	605
40	627
41	706
42	730
43	628
44	665
45	660
46	798
47	715
48	704
49	633
50	728

n	a(n)
0	35
1	51
2	93
3	58
4	122
5	74
6	108
7	131
8	118
9	152
10	195
11	192
12	236
13	184
14	247
15	243
16	254
17	286
18	325
19	292
20	318
21	336
22	375
23	393
24	339
25	431
26	327
27	433
28	485
29	447
30	456
31	455
32	448
33	492
34	452
35	507
36	489
37	541
38	526
39	605
40	627
41	706
42	730
43	628
44	665
45	660
46	798
47	715
48	704
49	633
50	728