A280163 - cp's OEIS frontend

A280163 Least number k such that sopfr(k) - sopf(k) = k/n, -1 if such a number does not exist.

n	a(n)
2	4
3	9
4	32
5	25
6	12
7	49
8	48
9	54
10	20
11	121
12	96
13	169
14	28
15	45
16	144
17	289
18	162
19	361
20	160
21	63
22	44
23	529
24	-1
25	250
26	52
27	-1
28	224
29	841
30	60
31	961
32	320
33	99
34	68
35	175
36	180
37	1369
38	76
39	117
40	240
41	1681
42	84
43	1849
44	352
45	270
46	92
47	2209
48	-1
49	686
50	-1
51	153
52	416
53	2809
54	-1
55	275
56	336
57	171
58	116

[4, 9, 32, 25, 12, 49, 48, 54, 20, 121, 96, 169, 28, 45, 144, 289, 162, 361, 160, 63, 44, 529, -1, 250, 52, -1, 224, 841, 60, 961, 320, 99, 68, 175, 180, 1369, 76, 117, 240, 1681, 84, 1849, 352, 270, 92, 2209, -1, 686, -1, 153, 416, 2809, -1, 275, 336, 171, 116]

cp's OEIS Frontend

A280163 Least number k such that sopfr(k) - sopf(k) = k/n, -1 if such a number does not exist.

Table of values

List of values