A387157 - cp's OEIS frontend

A387157 a(n) = A173557(sigma(n)), 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	2
3	1
4	6
5	2
6	2
7	1
8	8
9	12
10	2
11	2
12	6
13	6
14	2
15	2
16	30
17	2
18	24
19	4
20	12
21	1
22	2
23	2
24	8
25	30
26	12
27	4
28	6
29	8
30	2
31	1
32	12
33	2
34	2
35	2
36	72
37	18
38	8
39	6
40	8
41	12
42	2
43	10
44	12
45	24
46	2
47	2
48	30
49	36
50	60
51	2
52	6
53	2
54	8
55	2
56	8
57	4
58	8
59	8
60	12
61	30
62	2
63	12
64	126
65	12
66	2
67	16
68	12
69	2
70	2
71	2
72	96
73	36
74	36
75	30
76	24
77	2
78	12
79	4
80	60
81	10
82	12
83	12
84	6
85	2
86	20
87	8
88	8
89	8
90	24
91	6
92	12
93	1
94	2
95	8

[1, 2, 1, 6, 2, 2, 1, 8, 12, 2, 2, 6, 6, 2, 2, 30, 2, 24, 4, 12, 1, 2, 2, 8, 30, 12, 4, 6, 8, 2, 1, 12, 2, 2, 2, 72, 18, 8, 6, 8, 12, 2, 10, 12, 24, 2, 2, 30, 36, 60, 2, 6, 2, 8, 2, 8, 4, 8, 8, 12, 30, 2, 12, 126, 12, 2, 16, 12, 2, 2, 2, 96, 36, 36, 30, 24, 2, 12, 4, 60, 10, 12, 12, 6, 2, 20, 8, 8, 8, 24, 6, 12, 1, 2, 8]

cp's OEIS Frontend

A387157 a(n) = A173557(sigma(n)), 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

n	a(n)
1	1
2	2
3	1
4	6
5	2
6	2
7	1
8	8
9	12
10	2
11	2
12	6
13	6
14	2
15	2
16	30
17	2
18	24
19	4
20	12
21	1
22	2
23	2
24	8
25	30
26	12
27	4
28	6
29	8
30	2
31	1
32	12
33	2
34	2
35	2
36	72
37	18
38	8
39	6
40	8
41	12
42	2
43	10
44	12
45	24
46	2
47	2
48	30
49	36
50	60
51	2
52	6
53	2
54	8
55	2
56	8
57	4
58	8
59	8
60	12
61	30
62	2
63	12
64	126
65	12
66	2
67	16
68	12
69	2
70	2
71	2
72	96
73	36
74	36
75	30
76	24
77	2
78	12
79	4
80	60
81	10
82	12
83	12
84	6
85	2
86	20
87	8
88	8
89	8
90	24
91	6
92	12
93	1
94	2
95	8

n	a(n)
1	1
2	2
3	1
4	6
5	2
6	2
7	1
8	8
9	12
10	2
11	2
12	6
13	6
14	2
15	2
16	30
17	2
18	24
19	4
20	12
21	1
22	2
23	2
24	8
25	30
26	12
27	4
28	6
29	8
30	2
31	1
32	12
33	2
34	2
35	2
36	72
37	18
38	8
39	6
40	8
41	12
42	2
43	10
44	12
45	24
46	2
47	2
48	30
49	36
50	60
51	2
52	6
53	2
54	8
55	2
56	8
57	4
58	8
59	8
60	12
61	30
62	2
63	12
64	126
65	12
66	2
67	16
68	12
69	2
70	2
71	2
72	96
73	36
74	36
75	30
76	24
77	2
78	12
79	4
80	60
81	10
82	12
83	12
84	6
85	2
86	20
87	8
88	8
89	8
90	24
91	6
92	12
93	1
94	2
95	8

n	a(n)
1	1
2	2
3	1
4	6
5	2
6	2
7	1
8	8
9	12
10	2
11	2
12	6
13	6
14	2
15	2
16	30
17	2
18	24
19	4
20	12
21	1
22	2
23	2
24	8
25	30
26	12
27	4
28	6
29	8
30	2
31	1
32	12
33	2
34	2
35	2
36	72
37	18
38	8
39	6
40	8
41	12
42	2
43	10
44	12
45	24
46	2
47	2
48	30
49	36
50	60
51	2
52	6
53	2
54	8
55	2
56	8
57	4
58	8
59	8
60	12
61	30
62	2
63	12
64	126
65	12
66	2
67	16
68	12
69	2
70	2
71	2
72	96
73	36
74	36
75	30
76	24
77	2
78	12
79	4
80	60
81	10
82	12
83	12
84	6
85	2
86	20
87	8
88	8
89	8
90	24
91	6
92	12
93	1
94	2
95	8