A387162 - cp's OEIS frontend

A387162 Numbers k satisfying Euler's criterion for odd perfect numbers (A228058), such that sigma(k)+k is also a multiple of 3, and sigma(k) preserves the 3-adic valuation of k, where sigma is the sum of divisors function.

n	a(n)
1	153
2	325
3	801
4	925
5	1525
6	1573
7	1773
8	1825
9	2097
10	2205
11	2425
12	2725
13	3757
14	3825
15	3925
16	4041
17	4477
18	4525
19	4689
20	4825
21	5013
22	5725
23	6025
24	6877
25	6925
26	6957
27	7381
28	7605
29	7825
30	7929
31	8125
32	8425
33	8577
34	8725
35	8833
36	9325
37	9549
38	9873
39	9925
40	10225
41	10525
42	10693
43	10825
44	10933
45	11425
46	11493
47	11737
48	12789
49	13189
50	13437
51	13525

[153, 325, 801, 925, 1525, 1573, 1773, 1825, 2097, 2205, 2425, 2725, 3757, 3825, 3925, 4041, 4477, 4525, 4689, 4825, 5013, 5725, 6025, 6877, 6925, 6957, 7381, 7605, 7825, 7929, 8125, 8425, 8577, 8725, 8833, 9325, 9549, 9873, 9925, 10225, 10525, 10693, 10825, 10933, 11425, 11493, 11737, 12789, 13189, 13437, 13525]

cp's OEIS Frontend

A387162 Numbers k satisfying Euler's criterion for odd perfect numbers (A228058), such that sigma(k)+k is also a multiple of 3, and sigma(k) preserves the 3-adic valuation of k, where sigma is the sum of divisors function.

Table of values

List of values