A270044 - cp's OEIS frontend

A270044 a(n) = Smallest m >= 17 containing no eights when represented in any base from 9 through n.

n	a(n)
9	18
10	19
11	20
12	21
13	22
14	23
15	24
16	25
17	27
18	27
19	29
20	29
21	31
22	31
23	33
24	33
25	37
26	37
27	37
28	37
29	39
30	39
31	43
32	43
33	43
34	43
35	45
36	45
37	49
38	49
39	49
40	49
41	51
42	51
43	55
44	55
45	55
46	55
47	57
48	57
49	61
50	61
51	61
52	61
53	67
54	67
55	67
56	67
57	67
58	67
59	69
60	69
61	549
62	590
63	590
64	590
65	590
66	594
67	604
68	630

[18, 19, 20, 21, 22, 23, 24, 25, 27, 27, 29, 29, 31, 31, 33, 33, 37, 37, 37, 37, 39, 39, 43, 43, 43, 43, 45, 45, 49, 49, 49, 49, 51, 51, 55, 55, 55, 55, 57, 57, 61, 61, 61, 61, 67, 67, 67, 67, 67, 67, 69, 69, 549, 590, 590, 590, 590, 594, 604, 630]

cp's OEIS Frontend

A270044 a(n) = Smallest m >= 17 containing no eights when represented in any base from 9 through n.

Table of values

List of values

n	a(n)
9	18
10	19
11	20
12	21
13	22
14	23
15	24
16	25
17	27
18	27
19	29
20	29
21	31
22	31
23	33
24	33
25	37
26	37
27	37
28	37
29	39
30	39
31	43
32	43
33	43
34	43
35	45
36	45
37	49
38	49
39	49
40	49
41	51
42	51
43	55
44	55
45	55
46	55
47	57
48	57
49	61
50	61
51	61
52	61
53	67
54	67
55	67
56	67
57	67
58	67
59	69
60	69
61	549
62	590
63	590
64	590
65	590
66	594
67	604
68	630

n	a(n)
9	18
10	19
11	20
12	21
13	22
14	23
15	24
16	25
17	27
18	27
19	29
20	29
21	31
22	31
23	33
24	33
25	37
26	37
27	37
28	37
29	39
30	39
31	43
32	43
33	43
34	43
35	45
36	45
37	49
38	49
39	49
40	49
41	51
42	51
43	55
44	55
45	55
46	55
47	57
48	57
49	61
50	61
51	61
52	61
53	67
54	67
55	67
56	67
57	67
58	67
59	69
60	69
61	549
62	590
63	590
64	590
65	590
66	594
67	604
68	630

n	a(n)
9	18
10	19
11	20
12	21
13	22
14	23
15	24
16	25
17	27
18	27
19	29
20	29
21	31
22	31
23	33
24	33
25	37
26	37
27	37
28	37
29	39
30	39
31	43
32	43
33	43
34	43
35	45
36	45
37	49
38	49
39	49
40	49
41	51
42	51
43	55
44	55
45	55
46	55
47	57
48	57
49	61
50	61
51	61
52	61
53	67
54	67
55	67
56	67
57	67
58	67
59	69
60	69
61	549
62	590
63	590
64	590
65	590
66	594
67	604
68	630