A364089 - cp's OEIS frontend

A364089 a(n) is the greatest k such that the base-n digits of 2^k are all distinct.

n	a(n)
2	1
3	1
4	3
5	4
6	5
7	8
8	5
9	10
10	29
11	19
12	19
13	19
14	16
15	18
16	7
17	43
18	41
19	37
20	45
21	39
22	55
23	33
24	43
25	60
26	35
27	61
28	56
29	50
30	44
31	69
32	9
33	64
34	44
35	80
36	43
37	88
38	53
39	71
40	56
41	68
42	59
43	78
44	76
45	74
46	95
47	109
48	111
49	81
50	86
51	136
52	117
53	75
54	98
55	83
56	84
57	99
58	104
59	116
60	95
61	118
62	60
63	81
64	11
65	119
66	119
67	172
68	140
69	97
70	105
71	113
72	93
73	122
74	92

[1, 1, 3, 4, 5, 8, 5, 10, 29, 19, 19, 19, 16, 18, 7, 43, 41, 37, 45, 39, 55, 33, 43, 60, 35, 61, 56, 50, 44, 69, 9, 64, 44, 80, 43, 88, 53, 71, 56, 68, 59, 78, 76, 74, 95, 109, 111, 81, 86, 136, 117, 75, 98, 83, 84, 99, 104, 116, 95, 118, 60, 81, 11, 119, 119, 172, 140, 97, 105, 113, 93, 122, 92]

cp's OEIS Frontend

A364089 a(n) is the greatest k such that the base-n digits of 2^k are all distinct.

Table of values

List of values

n	a(n)
2	1
3	1
4	3
5	4
6	5
7	8
8	5
9	10
10	29
11	19
12	19
13	19
14	16
15	18
16	7
17	43
18	41
19	37
20	45
21	39
22	55
23	33
24	43
25	60
26	35
27	61
28	56
29	50
30	44
31	69
32	9
33	64
34	44
35	80
36	43
37	88
38	53
39	71
40	56
41	68
42	59
43	78
44	76
45	74
46	95
47	109
48	111
49	81
50	86
51	136
52	117
53	75
54	98
55	83
56	84
57	99
58	104
59	116
60	95
61	118
62	60
63	81
64	11
65	119
66	119
67	172
68	140
69	97
70	105
71	113
72	93
73	122
74	92

n	a(n)
2	1
3	1
4	3
5	4
6	5
7	8
8	5
9	10
10	29
11	19
12	19
13	19
14	16
15	18
16	7
17	43
18	41
19	37
20	45
21	39
22	55
23	33
24	43
25	60
26	35
27	61
28	56
29	50
30	44
31	69
32	9
33	64
34	44
35	80
36	43
37	88
38	53
39	71
40	56
41	68
42	59
43	78
44	76
45	74
46	95
47	109
48	111
49	81
50	86
51	136
52	117
53	75
54	98
55	83
56	84
57	99
58	104
59	116
60	95
61	118
62	60
63	81
64	11
65	119
66	119
67	172
68	140
69	97
70	105
71	113
72	93
73	122
74	92

n	a(n)
2	1
3	1
4	3
5	4
6	5
7	8
8	5
9	10
10	29
11	19
12	19
13	19
14	16
15	18
16	7
17	43
18	41
19	37
20	45
21	39
22	55
23	33
24	43
25	60
26	35
27	61
28	56
29	50
30	44
31	69
32	9
33	64
34	44
35	80
36	43
37	88
38	53
39	71
40	56
41	68
42	59
43	78
44	76
45	74
46	95
47	109
48	111
49	81
50	86
51	136
52	117
53	75
54	98
55	83
56	84
57	99
58	104
59	116
60	95
61	118
62	60
63	81
64	11
65	119
66	119
67	172
68	140
69	97
70	105
71	113
72	93
73	122
74	92