A270039 - cp's OEIS frontend

A270039 a(n) = Smallest m >= 7 containing no threes when represented in any base from 4 through n.

n	a(n)
4	8
5	9
6	10
7	32
8	32
9	36
10	64
11	64
12	64
13	64
14	64
15	64
16	64
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	104
27	145
28	145
29	145
30	145
31	145
32	145
33	145
34	145
35	145
36	145

[8, 9, 10, 32, 32, 36, 64, 64, 64, 64, 64, 64, 64, 100, 100, 100, 100, 100, 100, 100, 100, 100, 104, 145, 145, 145, 145, 145, 145, 145, 145, 145, 145]

cp's OEIS Frontend

A270039 a(n) = Smallest m >= 7 containing no threes when represented in any base from 4 through n.

Table of values

List of values

n	a(n)
4	8
5	9
6	10
7	32
8	32
9	36
10	64
11	64
12	64
13	64
14	64
15	64
16	64
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	104
27	145
28	145
29	145
30	145
31	145
32	145
33	145
34	145
35	145
36	145

n	a(n)
4	8
5	9
6	10
7	32
8	32
9	36
10	64
11	64
12	64
13	64
14	64
15	64
16	64
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	104
27	145
28	145
29	145
30	145
31	145
32	145
33	145
34	145
35	145
36	145

n	a(n)
4	8
5	9
6	10
7	32
8	32
9	36
10	64
11	64
12	64
13	64
14	64
15	64
16	64
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	104
27	145
28	145
29	145
30	145
31	145
32	145
33	145
34	145
35	145
36	145