A193886 - cp's OEIS frontend

A193886 Numbers n such that the decimal form of the period of 1/n is semiprime (omit any trailing zeros from the period).

n	a(n)
1	6
2	11
3	15
4	24
5	54
6	60
7	66
8	81
9	96
10	110
11	111
12	123
13	135
14	144
15	150
16	165
17	216
18	225
19	240
20	303
21	352
22	375
23	384
24	396
25	477
26	528
27	540
28	600
29	660
30	666
31	711
32	717
33	738
34	792
35	810
36	813
37	960
38	1056
39	1100
40	1110
41	1111
42	1230
43	1350
44	1440
45	1500
46	1536
47	1650
48	1665
49	1728
50	1818
51	1845
52	2043
53	2079

[6, 11, 15, 24, 54, 60, 66, 81, 96, 110, 111, 123, 135, 144, 150, 165, 216, 225, 240, 303, 352, 375, 384, 396, 477, 528, 540, 600, 660, 666, 711, 717, 738, 792, 810, 813, 960, 1056, 1100, 1110, 1111, 1230, 1350, 1440, 1500, 1536, 1650, 1665, 1728, 1818, 1845, 2043, 2079]

cp's OEIS Frontend

A193886 Numbers n such that the decimal form of the period of 1/n is semiprime (omit any trailing zeros from the period).

Table of values

List of values