A015849 - cp's OEIS frontend

A015849 Numbers n such that phi(n + 9) | sigma(n) for n not congruent to 0 (mod 3).

n	a(n)
1	5
2	7
3	10
4	31
5	47
6	79
7	127
8	145
9	161
10	223
11	238
12	239
13	355
14	367
15	371
16	376
17	418
18	455
19	463
20	479
21	748
22	863
23	1039
24	1045
25	1087
26	1103
27	1118
28	1327
29	1423
30	1439
31	1567
32	1583
33	1823
34	1886
35	1999
36	2065
37	2108
38	2143
39	2201
40	2207
41	2239
42	2447
43	2461
44	2687
45	2767
46	2840
47	2927
48	2975

[5, 7, 10, 31, 47, 79, 127, 145, 161, 223, 238, 239, 355, 367, 371, 376, 418, 455, 463, 479, 748, 863, 1039, 1045, 1087, 1103, 1118, 1327, 1423, 1439, 1567, 1583, 1823, 1886, 1999, 2065, 2108, 2143, 2201, 2207, 2239, 2447, 2461, 2687, 2767, 2840, 2927, 2975]

cp's OEIS Frontend

A015849 Numbers n such that phi(n + 9) | sigma(n) for n not congruent to 0 (mod 3).

Table of values

List of values