A098216 - cp's OEIS frontend

A098216 Nonprime numbers m for which cototient(m) is a decimal repdigit.

n	a(n)
1	1
2	4
3	6
4	8
5	9
6	10
7	12
8	14
9	15
10	16
11	21
12	25
13	27
14	30
15	35
16	49
17	60
18	86
19	90
20	93
21	120
22	121
23	145
24	159
25	172
26	175
27	195
28	231
29	245
30	253
31	279
32	291
33	327
34	365
35	497
36	535
37	559
38	693
39	703
40	737
41	886
42	979
43	981
44	993
45	1037
46	1111
47	1121
48	1411
49	1457
50	1517
51	1617
52	1772
53	1774
54	2047
55	2059

[1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 21, 25, 27, 30, 35, 49, 60, 86, 90, 93, 120, 121, 145, 159, 172, 175, 195, 231, 245, 253, 279, 291, 327, 365, 497, 535, 559, 693, 703, 737, 886, 979, 981, 993, 1037, 1111, 1121, 1411, 1457, 1517, 1617, 1772, 1774, 2047, 2059]

cp's OEIS Frontend

A098216 Nonprime numbers m for which cototient(m) is a decimal repdigit.

Table of values

List of values