A353365 - cp's OEIS frontend

A353365 Numbers k such that the odd part of sigma(sigma(k)) is equal to the odd part of sigma(k).

n	a(n)
1	1
2	5
3	12
4	427
5	9120
6	9180
7	9504
8	9720
9	9960
10	10296
11	10620
12	10740
13	10824
14	11070
15	11310
16	11480
17	11484
18	11556
19	11628
20	11748
21	11934
22	11960
23	12024
24	12036
25	12072
26	12084
27	12376
28	12460
29	12510
30	12570
31	12640
32	12924
33	12980
34	13000
35	13216
36	13340
37	13554
38	13804
39	13806
40	13962
41	13984
42	14022
43	14056
44	14094
45	14178
46	14212
47	14336
48	14380

[1, 5, 12, 427, 9120, 9180, 9504, 9720, 9960, 10296, 10620, 10740, 10824, 11070, 11310, 11480, 11484, 11556, 11628, 11748, 11934, 11960, 12024, 12036, 12072, 12084, 12376, 12460, 12510, 12570, 12640, 12924, 12980, 13000, 13216, 13340, 13554, 13804, 13806, 13962, 13984, 14022, 14056, 14094, 14178, 14212, 14336, 14380]

cp's OEIS Frontend

A353365 Numbers k such that the odd part of sigma(sigma(k)) is equal to the odd part of sigma(k).

Table of values

List of values