A015771 - cp's OEIS frontend

A015771 Numbers k such that phi(k) | sigma_13(k).

n	a(n)
1	1
2	2
3	3
4	6
5	12
6	14
7	15
8	30
9	35
10	42
11	56
12	70
13	78
14	105
15	140
16	168
17	190
18	210
19	248
20	264
21	270
22	357
23	418
24	420
25	570
26	594
27	616
28	630
29	714
30	744
31	749
32	812
33	840
34	910
35	1045
36	1240
37	1254
38	1485
39	1498
40	1672
41	1848
42	2090
43	2214
44	2247
45	2376
46	2436
47	2568
48	2580
49	2730

[1, 2, 3, 6, 12, 14, 15, 30, 35, 42, 56, 70, 78, 105, 140, 168, 190, 210, 248, 264, 270, 357, 418, 420, 570, 594, 616, 630, 714, 744, 749, 812, 840, 910, 1045, 1240, 1254, 1485, 1498, 1672, 1848, 2090, 2214, 2247, 2376, 2436, 2568, 2580, 2730]

cp's OEIS Frontend

A015771 Numbers k such that phi(k) | sigma_13(k).

Table of values

List of values