A383473 - cp's OEIS frontend

A383473 Integers k such that d*2^k + 1 is prime for some divisor of k.

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	12
7	14
8	15
9	16
10	18
11	25
12	30
13	36
14	51
15	55
16	63
17	66
18	69
19	75
20	81
21	85
22	134
23	141
24	162
25	189
26	201
27	209
28	220
29	245
30	276
31	324
32	408
33	438
34	446
35	456
36	534
37	616
38	675
39	693
40	726
41	892
42	900
43	1305
44	1326
45	1494
46	1824
47	2208
48	2394
49	2766
50	2826
51	3024
52	3168
53	3189
54	3690
55	3703
56	3880
57	3912
58	3927
59	4410
60	4543
61	4713

[1, 2, 4, 6, 8, 12, 14, 15, 16, 18, 25, 30, 36, 51, 55, 63, 66, 69, 75, 81, 85, 134, 141, 162, 189, 201, 209, 220, 245, 276, 324, 408, 438, 446, 456, 534, 616, 675, 693, 726, 892, 900, 1305, 1326, 1494, 1824, 2208, 2394, 2766, 2826, 3024, 3168, 3189, 3690, 3703, 3880, 3912, 3927, 4410, 4543, 4713]

cp's OEIS Frontend

A383473 Integers k such that d*2^k + 1 is prime for some divisor of k.

Table of values

List of values