A270040 - cp's OEIS frontend

A270040 a(n) = Smallest m >= 9 containing no fours when represented in any base from 5 through n.

n	a(n)
5	10
6	11
7	12
8	13
9	15
10	15
11	17
12	17
13	66
14	75
15	75
16	86
17	86
18	90
19	138
20	138
21	138
22	138
23	138
24	138
25	138
26	138
27	138
28	182
29	182
30	182
31	182
32	182
33	182
34	182
35	182
36	182
37	185
38	781817578165
39	781817578165
40	7826560751018861596150680

[10, 11, 12, 13, 15, 15, 17, 17, 66, 75, 75, 86, 86, 90, 138, 138, 138, 138, 138, 138, 138, 138, 138, 182, 182, 182, 182, 182, 182, 182, 182, 182, 185, 781817578165, 781817578165, 7826560751018861596150680]

cp's OEIS Frontend

A270040 a(n) = Smallest m >= 9 containing no fours when represented in any base from 5 through n.

Table of values

List of values