A003958 - cp's OEIS frontend

A003958 If n = Product p(k)^e(k) then a(n) = Product (p(k)-1)^e(k).

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

[1, 1, 2, 1, 4, 2, 6, 1, 4, 4, 10, 2, 12, 6, 8, 1, 16, 4, 18, 4, 12, 10, 22, 2, 16, 12, 8, 6, 28, 8, 30, 1, 20, 16, 24, 4, 36, 18, 24, 4, 40, 12, 42, 10, 16, 22, 46, 2, 36, 16, 32, 12, 52, 8, 40, 6, 36, 28, 58, 8, 60, 30, 24, 1, 48, 20, 66, 16, 44, 24, 70, 4, 72, 36, 32, 18, 60, 24, 78, 4, 16]

cp's OEIS Frontend

A003958 If n = Product p(k)^e(k) then a(n) = Product (p(k)-1)^e(k).

Table of values

List of values

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

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

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