A001682 - cp's OEIS frontend

A001682 Numbers k such that 3^k, 3^(k+1) and 3^(k+2) have the same number of digits.

n	a(n)
1	0
2	21
3	42
4	65
5	86
6	109
7	130
8	151
9	174
10	195
11	218
12	239
13	262
14	283
15	304
16	327
17	348
18	371
19	392
20	415
21	436
22	457
23	480
24	501
25	524
26	545
27	568
28	589
29	610
30	633
31	654
32	677
33	698
34	721
35	742
36	763
37	786
38	807
39	830
40	851
41	874
42	895
43	916
44	939
45	960
46	983
47	1004
48	1027
49	1048

[0, 21, 42, 65, 86, 109, 130, 151, 174, 195, 218, 239, 262, 283, 304, 327, 348, 371, 392, 415, 436, 457, 480, 501, 524, 545, 568, 589, 610, 633, 654, 677, 698, 721, 742, 763, 786, 807, 830, 851, 874, 895, 916, 939, 960, 983, 1004, 1027, 1048]

cp's OEIS Frontend

A001682 Numbers k such that 3^k, 3^(k+1) and 3^(k+2) have the same number of digits.

Table of values

List of values