A015948 - cp's OEIS frontend

A015948 a(n) = smallest k >= n such that k | (2^k + n).

n	a(n)
0	1
1	2
2	5
3	4
4	7
5	10
6	15
7	8
8	11
9	14
10	13
11	28
12	21
13	78
14	17
15	16
16	19
17	22
18	49
19	42
20	23
21	26
22	1577
23	40
24	33
25	30
26	29
27	44
28	31
29	34
30	39
31	32
32	65
33	38
34	37
35	52
36	115
37	102
38	41
39	242
40	43
41	46
42	51
43	60
44	47
45	279
46	395
47	152
48	57
49	114
50	53
51	68
52	85
53	58
54	63
55	104
56	59
57	62
58	61
59	76
60	69
61	126
62	5773
63	64
64	67
65	1090

[1, 2, 5, 4, 7, 10, 15, 8, 11, 14, 13, 28, 21, 78, 17, 16, 19, 22, 49, 42, 23, 26, 1577, 40, 33, 30, 29, 44, 31, 34, 39, 32, 65, 38, 37, 52, 115, 102, 41, 242, 43, 46, 51, 60, 47, 279, 395, 152, 57, 114, 53, 68, 85, 58, 63, 104, 59, 62, 61, 76, 69, 126, 5773, 64, 67, 1090]

cp's OEIS Frontend

A015948 a(n) = smallest k >= n such that k | (2^k + n).

Table of values

List of values