A047630 - cp's OEIS frontend

A047630 Numbers k that divide sigma(k) * phi(k) and are not divisible by 6.

n	a(n)
1	1
2	28
3	40
4	117
5	135
6	196
7	200
8	224
9	496
10	640
11	775
12	819
13	891
14	1000
15	1372
16	1521
17	1550
18	1568
19	1701
20	1792
21	2176
22	2325
23	2480
24	3100
25	3159
26	3200
27	3375
28	3724
29	4455
30	5000
31	5632
32	5733
33	6200
34	6860
35	6875
36	6975
37	8128
38	9604
39	10240
40	10880
41	10935
42	10976
43	11907

[1, 28, 40, 117, 135, 196, 200, 224, 496, 640, 775, 819, 891, 1000, 1372, 1521, 1550, 1568, 1701, 1792, 2176, 2325, 2480, 3100, 3159, 3200, 3375, 3724, 4455, 5000, 5632, 5733, 6200, 6860, 6875, 6975, 8128, 9604, 10240, 10880, 10935, 10976, 11907]

cp's OEIS Frontend

A047630 Numbers k that divide sigma(k) * phi(k) and are not divisible by 6.

Table of values

List of values