A332217 - cp's OEIS frontend

A332217 Numbers k for which the 2-adic valuation of sigma(k) is zero and its 3-adic valuation is 1 (so that sigma(k) is an odd multiple of 3, but not of 9).

n	a(n)
1	2
2	8
3	18
4	49
5	50
6	72
7	128
8	162
9	169
10	196
11	200
12	242
13	361
14	441
15	450
16	512
17	578
18	648
19	676
20	784
21	961
22	968
23	1058
24	1152
25	1225
26	1250
27	1369
28	1444
29	1458
30	1521
31	1682
32	1764
33	1800
34	1849
35	2178
36	2312
37	2704
38	3136
39	3200
40	3249
41	3362
42	3721
43	3844
44	3969
45	4050
46	4225
47	4232
48	4418
49	4489
50	4608
51	4802
52	4900
53	5000

[2, 8, 18, 49, 50, 72, 128, 162, 169, 196, 200, 242, 361, 441, 450, 512, 578, 648, 676, 784, 961, 968, 1058, 1152, 1225, 1250, 1369, 1444, 1458, 1521, 1682, 1764, 1800, 1849, 2178, 2312, 2704, 3136, 3200, 3249, 3362, 3721, 3844, 3969, 4050, 4225, 4232, 4418, 4489, 4608, 4802, 4900, 5000]

cp's OEIS Frontend

A332217 Numbers k for which the 2-adic valuation of sigma(k) is zero and its 3-adic valuation is 1 (so that sigma(k) is an odd multiple of 3, but not of 9).

Table of values

List of values