A153519 - cp's OEIS frontend

A153519 Nonprime numbers k such that 10^k == 10 (mod k) and are not Carmichael numbers.

n	a(n)
1	1
2	6
3	9
4	10
5	15
6	18
7	30
8	33
9	45
10	55
11	90
12	91
13	99
14	165
15	246
16	259
17	370
18	385
19	451
20	481
21	495
22	505
23	657
24	703
25	715
26	909
27	1035
28	1045
29	1233
30	1626
31	2035
32	2409
33	2981
34	3333
35	3367
36	3585
37	4005
38	4141
39	4187
40	4521
41	4545
42	5005
43	5461
44	6533
45	6541
46	6565
47	7107
48	7471
49	7777
50	8149

[1, 6, 9, 10, 15, 18, 30, 33, 45, 55, 90, 91, 99, 165, 246, 259, 370, 385, 451, 481, 495, 505, 657, 703, 715, 909, 1035, 1045, 1233, 1626, 2035, 2409, 2981, 3333, 3367, 3585, 4005, 4141, 4187, 4521, 4545, 5005, 5461, 6533, 6541, 6565, 7107, 7471, 7777, 8149]

cp's OEIS Frontend

A153519 Nonprime numbers k such that 10^k == 10 (mod k) and are not Carmichael numbers.

Table of values

List of values