A061280 - cp's OEIS frontend

A061280 Smallest base b >= 2 for which b^n contains n as a substring.

n	a(n)
1	10
2	5
3	7
4	7
5	5
6	2
7	3
8	7
9	3
10	2
11	11
12	7
13	6
14	25
15	7
16	11
17	4
18	8
19	5
20	7
21	6
22	6
23	6
24	3
25	4
26	9
27	17
28	3
29	6
30	13
31	8
32	5
33	8
34	5
35	2
36	2
37	2
38	8
39	6
40	6
41	5
42	4
43	7
44	2
45	6
46	9
47	8
48	6
49	2
50	4
51	2
52	8
53	6
54	5
55	5
56	5
57	3
58	8
59	4
60	2
61	3
62	3
63	6
64	5
65	6
66	12
67	2
68	6
69	3
70	5
71	3
72	2
73	2
74	6
75	5
76	6
77	3
78	3
79	4
80	3
81	4
82	2
83	3
84	4
85	2
86	4
87	3
88	7
89	2
90	8
91	8
92	4
93	2
94	6
95	3
96	4
97	7
98	6
99	7
100	7

[10, 5, 7, 7, 5, 2, 3, 7, 3, 2, 11, 7, 6, 25, 7, 11, 4, 8, 5, 7, 6, 6, 6, 3, 4, 9, 17, 3, 6, 13, 8, 5, 8, 5, 2, 2, 2, 8, 6, 6, 5, 4, 7, 2, 6, 9, 8, 6, 2, 4, 2, 8, 6, 5, 5, 5, 3, 8, 4, 2, 3, 3, 6, 5, 6, 12, 2, 6, 3, 5, 3, 2, 2, 6, 5, 6, 3, 3, 4, 3, 4, 2, 3, 4, 2, 4, 3, 7, 2, 8, 8, 4, 2, 6, 3, 4, 7, 6, 7, 7]

cp's OEIS Frontend

A061280 Smallest base b >= 2 for which b^n contains n as a substring.

Table of values

List of values

n	a(n)
1	10
2	5
3	7
4	7
5	5
6	2
7	3
8	7
9	3
10	2
11	11
12	7
13	6
14	25
15	7
16	11
17	4
18	8
19	5
20	7
21	6
22	6
23	6
24	3
25	4
26	9
27	17
28	3
29	6
30	13
31	8
32	5
33	8
34	5
35	2
36	2
37	2
38	8
39	6
40	6
41	5
42	4
43	7
44	2
45	6
46	9
47	8
48	6
49	2
50	4
51	2
52	8
53	6
54	5
55	5
56	5
57	3
58	8
59	4
60	2
61	3
62	3
63	6
64	5
65	6
66	12
67	2
68	6
69	3
70	5
71	3
72	2
73	2
74	6
75	5
76	6
77	3
78	3
79	4
80	3
81	4
82	2
83	3
84	4
85	2
86	4
87	3
88	7
89	2
90	8
91	8
92	4
93	2
94	6
95	3
96	4
97	7
98	6
99	7
100	7

n	a(n)
1	10
2	5
3	7
4	7
5	5
6	2
7	3
8	7
9	3
10	2
11	11
12	7
13	6
14	25
15	7
16	11
17	4
18	8
19	5
20	7
21	6
22	6
23	6
24	3
25	4
26	9
27	17
28	3
29	6
30	13
31	8
32	5
33	8
34	5
35	2
36	2
37	2
38	8
39	6
40	6
41	5
42	4
43	7
44	2
45	6
46	9
47	8
48	6
49	2
50	4
51	2
52	8
53	6
54	5
55	5
56	5
57	3
58	8
59	4
60	2
61	3
62	3
63	6
64	5
65	6
66	12
67	2
68	6
69	3
70	5
71	3
72	2
73	2
74	6
75	5
76	6
77	3
78	3
79	4
80	3
81	4
82	2
83	3
84	4
85	2
86	4
87	3
88	7
89	2
90	8
91	8
92	4
93	2
94	6
95	3
96	4
97	7
98	6
99	7
100	7

n	a(n)
1	10
2	5
3	7
4	7
5	5
6	2
7	3
8	7
9	3
10	2
11	11
12	7
13	6
14	25
15	7
16	11
17	4
18	8
19	5
20	7
21	6
22	6
23	6
24	3
25	4
26	9
27	17
28	3
29	6
30	13
31	8
32	5
33	8
34	5
35	2
36	2
37	2
38	8
39	6
40	6
41	5
42	4
43	7
44	2
45	6
46	9
47	8
48	6
49	2
50	4
51	2
52	8
53	6
54	5
55	5
56	5
57	3
58	8
59	4
60	2
61	3
62	3
63	6
64	5
65	6
66	12
67	2
68	6
69	3
70	5
71	3
72	2
73	2
74	6
75	5
76	6
77	3
78	3
79	4
80	3
81	4
82	2
83	3
84	4
85	2
86	4
87	3
88	7
89	2
90	8
91	8
92	4
93	2
94	6
95	3
96	4
97	7
98	6
99	7
100	7