A387158 - cp's OEIS frontend

A387158 Numbers k such that A173557(k) = A173557(sigma(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and sigma is the sum of divisors function.

n	a(n)
1	1
2	6
3	26
4	28
5	63
6	74
7	120
8	122
9	135
10	146
11	270
12	314
13	351
14	386
15	416
16	496
17	520
18	554
19	626
20	672
21	794
22	842
23	875
24	891
25	914
26	999
27	1080
28	1082
29	1226
30	1232
31	1322
32	1346
33	1404
34	1466
35	1480
36	1514
37	1638
38	1647
39	1750
40	1754
41	1782
42	1859
43	1971
44	1994
45	2186
46	2306
47	2402
48	2426
49	2440
50	2474
51	2642
52	2762
53	2906
54	2920
55	3242
56	3314
57	3506
58	3718

[1, 6, 26, 28, 63, 74, 120, 122, 135, 146, 270, 314, 351, 386, 416, 496, 520, 554, 626, 672, 794, 842, 875, 891, 914, 999, 1080, 1082, 1226, 1232, 1322, 1346, 1404, 1466, 1480, 1514, 1638, 1647, 1750, 1754, 1782, 1859, 1971, 1994, 2186, 2306, 2402, 2426, 2440, 2474, 2642, 2762, 2906, 2920, 3242, 3314, 3506, 3718]

cp's OEIS Frontend

A387158 Numbers k such that A173557(k) = A173557(sigma(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and sigma is the sum of divisors function.

Table of values

List of values