A065824 - cp's OEIS frontend

A065824 Smallest solution m to (n+1)phi(m) = nsigma(m), or -1 if no solution exists.

n	a(n)
1	3
2	5
3	7
4	323
5	11
6	13
7	899
8	17
9	19
10	1763
11	23
12	5249
13	3239
14	29
15	31
16	979801
17	5459
18	37
19	10763
20	41
21	43
22	9179
23	47
24	9701
25	10403
26	53
27	12319
28	5646547
29	59
30	61
31	24569
32	19109
33	67
34	19043
35	71
36	73
37	22499
38	50819
39	79
40	41309
41	83
42	32639
43	46979
44	89
45	34579
46	39059
47	125969

[3, 5, 7, 323, 11, 13, 899, 17, 19, 1763, 23, 5249, 3239, 29, 31, 979801, 5459, 37, 10763, 41, 43, 9179, 47, 9701, 10403, 53, 12319, 5646547, 59, 61, 24569, 19109, 67, 19043, 71, 73, 22499, 50819, 79, 41309, 83, 32639, 46979, 89, 34579, 39059, 125969]

cp's OEIS Frontend

A065824 Smallest solution m to (n+1)phi(m) = nsigma(m), or -1 if no solution exists.

Table of values

List of values

cp's OEIS Frontend

A065824 Smallest solution m to (n+1)*phi(m) = n*sigma(m), or -1 if no solution exists.

Table of values

List of values

A065824 Smallest solution m to (n+1)phi(m) = nsigma(m), or -1 if no solution exists.