A163371 - cp's OEIS frontend

A163371 a(n) = tau(phi(sigma(n))).

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

[1, 2, 2, 4, 2, 3, 3, 4, 6, 4, 3, 6, 4, 4, 4, 8, 4, 8, 4, 6, 5, 6, 4, 5, 8, 6, 5, 8, 4, 8, 5, 9, 5, 6, 5, 12, 6, 5, 8, 8, 6, 6, 6, 8, 8, 8, 5, 12, 9, 12, 8, 8, 6, 6, 8, 6, 6, 8, 5, 10, 8, 6, 10, 12, 8, 10, 6, 9, 6, 10, 8, 12, 9, 9, 12, 10, 6, 10, 6, 12, 8, 9, 8, 12, 9, 8]

cp's OEIS Frontend

A163371 a(n) = tau(phi(sigma(n))).

Table of values

List of values

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

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

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