A318305 - cp's OEIS frontend

A318305 a(n) = Product_{primes p dividing n} p - Product_{primes p dividing n} (p-1).

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	1
10	6
11	1
12	4
13	1
14	8
15	7
16	1
17	1
18	4
19	1
20	6
21	9
22	12
23	1
24	4
25	1
26	14
27	1
28	8
29	1
30	22
31	1
32	1
33	13
34	18
35	11
36	4
37	1
38	20
39	15
40	6
41	1
42	30
43	1
44	12
45	7
46	24
47	1
48	4
49	1
50	6
51	19
52	14
53	1
54	4
55	15
56	8
57	21
58	30
59	1
60	22
61	1
62	32
63	9
64	1
65	17
66	46
67	1
68	18
69	25
70	46
71	1
72	4
73	1
74	38
75	7
76	20
77	17
78	54
79	1
80	6
81	1
82	42
83	1
84	30
85	21
86	44
87	31
88	12
89	1
90	22
91	19
92	24
93	33
94	48
95	23
96	4
97	1
98	8

[0, 1, 1, 1, 1, 4, 1, 1, 1, 6, 1, 4, 1, 8, 7, 1, 1, 4, 1, 6, 9, 12, 1, 4, 1, 14, 1, 8, 1, 22, 1, 1, 13, 18, 11, 4, 1, 20, 15, 6, 1, 30, 1, 12, 7, 24, 1, 4, 1, 6, 19, 14, 1, 4, 15, 8, 21, 30, 1, 22, 1, 32, 9, 1, 17, 46, 1, 18, 25, 46, 1, 4, 1, 38, 7, 20, 17, 54, 1, 6, 1, 42, 1, 30, 21, 44, 31, 12, 1, 22, 19, 24, 33, 48, 23, 4, 1, 8]

cp's OEIS Frontend

A318305 a(n) = Product_{primes p dividing n} p - Product_{primes p dividing n} (p-1).

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	1
10	6
11	1
12	4
13	1
14	8
15	7
16	1
17	1
18	4
19	1
20	6
21	9
22	12
23	1
24	4
25	1
26	14
27	1
28	8
29	1
30	22
31	1
32	1
33	13
34	18
35	11
36	4
37	1
38	20
39	15
40	6
41	1
42	30
43	1
44	12
45	7
46	24
47	1
48	4
49	1
50	6
51	19
52	14
53	1
54	4
55	15
56	8
57	21
58	30
59	1
60	22
61	1
62	32
63	9
64	1
65	17
66	46
67	1
68	18
69	25
70	46
71	1
72	4
73	1
74	38
75	7
76	20
77	17
78	54
79	1
80	6
81	1
82	42
83	1
84	30
85	21
86	44
87	31
88	12
89	1
90	22
91	19
92	24
93	33
94	48
95	23
96	4
97	1
98	8

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	1
10	6
11	1
12	4
13	1
14	8
15	7
16	1
17	1
18	4
19	1
20	6
21	9
22	12
23	1
24	4
25	1
26	14
27	1
28	8
29	1
30	22
31	1
32	1
33	13
34	18
35	11
36	4
37	1
38	20
39	15
40	6
41	1
42	30
43	1
44	12
45	7
46	24
47	1
48	4
49	1
50	6
51	19
52	14
53	1
54	4
55	15
56	8
57	21
58	30
59	1
60	22
61	1
62	32
63	9
64	1
65	17
66	46
67	1
68	18
69	25
70	46
71	1
72	4
73	1
74	38
75	7
76	20
77	17
78	54
79	1
80	6
81	1
82	42
83	1
84	30
85	21
86	44
87	31
88	12
89	1
90	22
91	19
92	24
93	33
94	48
95	23
96	4
97	1
98	8

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	1
10	6
11	1
12	4
13	1
14	8
15	7
16	1
17	1
18	4
19	1
20	6
21	9
22	12
23	1
24	4
25	1
26	14
27	1
28	8
29	1
30	22
31	1
32	1
33	13
34	18
35	11
36	4
37	1
38	20
39	15
40	6
41	1
42	30
43	1
44	12
45	7
46	24
47	1
48	4
49	1
50	6
51	19
52	14
53	1
54	4
55	15
56	8
57	21
58	30
59	1
60	22
61	1
62	32
63	9
64	1
65	17
66	46
67	1
68	18
69	25
70	46
71	1
72	4
73	1
74	38
75	7
76	20
77	17
78	54
79	1
80	6
81	1
82	42
83	1
84	30
85	21
86	44
87	31
88	12
89	1
90	22
91	19
92	24
93	33
94	48
95	23
96	4
97	1
98	8