A073464 - cp's OEIS frontend

A073464 a(n) = phi(n) mod PrimePi(n).

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

[0, 0, 0, 1, 2, 2, 0, 2, 0, 0, 4, 0, 0, 2, 2, 2, 6, 2, 0, 4, 2, 4, 8, 2, 3, 0, 3, 8, 8, 8, 5, 9, 5, 2, 1, 0, 6, 0, 4, 1, 12, 0, 6, 10, 8, 1, 1, 12, 5, 2, 9, 4, 2, 8, 8, 4, 12, 7, 16, 6, 12, 0, 14, 12, 2, 9, 13, 6, 5, 10, 4, 9, 15, 19, 15, 18, 3, 12, 10, 10, 18, 13, 1, 18, 19, 10, 17, 16, 0, 0, 20, 12]

cp's OEIS Frontend

A073464 a(n) = phi(n) mod PrimePi(n).

Table of values

List of values

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

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

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