A306355 - cp's OEIS frontend

A306355 Numbers k such that the period of 1/k, or 0 if 1/k terminates, is strictly greater than the period of the decimal expansion of 1/m for all m < k.

n	a(n)
1	1
2	3
3	7
4	17
5	19
6	23
7	29
8	47
9	59
10	61
11	97
12	109
13	113
14	131
15	149
16	167
17	179
18	181
19	193
20	223
21	229
22	233
23	257
24	263
25	269
26	289
27	313
28	337
29	361
30	367
31	379
32	383
33	389
34	419
35	433
36	461
37	487
38	491
39	499
40	503
41	509
42	541
43	571
44	577
45	593
46	619
47	647
48	659
49	701
50	709
51	727
52	743
53	811
54	821
55	823

[1, 3, 7, 17, 19, 23, 29, 47, 59, 61, 97, 109, 113, 131, 149, 167, 179, 181, 193, 223, 229, 233, 257, 263, 269, 289, 313, 337, 361, 367, 379, 383, 389, 419, 433, 461, 487, 491, 499, 503, 509, 541, 571, 577, 593, 619, 647, 659, 701, 709, 727, 743, 811, 821, 823]

cp's OEIS Frontend

A306355 Numbers k such that the period of 1/k, or 0 if 1/k terminates, is strictly greater than the period of the decimal expansion of 1/m for all m < k.

Table of values

List of values

n	a(n)
1	1
2	3
3	7
4	17
5	19
6	23
7	29
8	47
9	59
10	61
11	97
12	109
13	113
14	131
15	149
16	167
17	179
18	181
19	193
20	223
21	229
22	233
23	257
24	263
25	269
26	289
27	313
28	337
29	361
30	367
31	379
32	383
33	389
34	419
35	433
36	461
37	487
38	491
39	499
40	503
41	509
42	541
43	571
44	577
45	593
46	619
47	647
48	659
49	701
50	709
51	727
52	743
53	811
54	821
55	823

n	a(n)
1	1
2	3
3	7
4	17
5	19
6	23
7	29
8	47
9	59
10	61
11	97
12	109
13	113
14	131
15	149
16	167
17	179
18	181
19	193
20	223
21	229
22	233
23	257
24	263
25	269
26	289
27	313
28	337
29	361
30	367
31	379
32	383
33	389
34	419
35	433
36	461
37	487
38	491
39	499
40	503
41	509
42	541
43	571
44	577
45	593
46	619
47	647
48	659
49	701
50	709
51	727
52	743
53	811
54	821
55	823

n	a(n)
1	1
2	3
3	7
4	17
5	19
6	23
7	29
8	47
9	59
10	61
11	97
12	109
13	113
14	131
15	149
16	167
17	179
18	181
19	193
20	223
21	229
22	233
23	257
24	263
25	269
26	289
27	313
28	337
29	361
30	367
31	379
32	383
33	389
34	419
35	433
36	461
37	487
38	491
39	499
40	503
41	509
42	541
43	571
44	577
45	593
46	619
47	647
48	659
49	701
50	709
51	727
52	743
53	811
54	821
55	823