A186884 - cp's OEIS frontend

A186884 Numbers k such that 2^(k-1) == 1 + b*k (mod k^2), where b divides k - 2^p for some integer p >= 0 and 2^p <= b.

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	17
7	19
8	29
9	31
10	37
11	71
12	127
13	173
14	199
15	233
16	251
17	257
18	379
19	491
20	613
21	881
22	2047
23	2633
24	2659
25	3373
26	3457
27	5501
28	5683
29	8191
30	11497
31	13249
32	15823
33	16879
34	18839
35	22669
36	24763
37	25037
38	26893
39	30139
40	45337
41	48473
42	56671
43	58921
44	65537
45	70687
46	74531
47	74597
48	77023
49	79669
50	87211
51	92237
52	102407
53	131071
54	133493
55	181421
56	184511
57	237379
58	250583
59	254491
60	281381

[3, 5, 7, 11, 13, 17, 19, 29, 31, 37, 71, 127, 173, 199, 233, 251, 257, 379, 491, 613, 881, 2047, 2633, 2659, 3373, 3457, 5501, 5683, 8191, 11497, 13249, 15823, 16879, 18839, 22669, 24763, 25037, 26893, 30139, 45337, 48473, 56671, 58921, 65537, 70687, 74531, 74597, 77023, 79669, 87211, 92237, 102407, 131071, 133493, 181421, 184511, 237379, 250583, 254491, 281381]

cp's OEIS Frontend

A186884 Numbers k such that 2^(k-1) == 1 + b*k (mod k^2), where b divides k - 2^p for some integer p >= 0 and 2^p <= b.

Table of values

List of values