A215486 - cp's OEIS frontend

A215486 n - 1 mod phi(n), where phi(n) is Euler's totient function.

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

[0, 0, 0, 1, 0, 1, 0, 3, 2, 1, 0, 3, 0, 1, 6, 7, 0, 5, 0, 3, 8, 1, 0, 7, 4, 1, 8, 3, 0, 5, 0, 15, 12, 1, 10, 11, 0, 1, 14, 7, 0, 5, 0, 3, 20, 1, 0, 15, 6, 9, 18, 3, 0, 17, 14, 7, 20, 1, 0, 11, 0, 1, 26, 31, 16, 5, 0, 3, 24, 21, 0, 23, 0, 1, 34, 3, 16, 5, 0, 15, 26, 1, 0, 11, 20, 1, 30, 7, 0, 17]

cp's OEIS Frontend

A215486 n - 1 mod phi(n), where phi(n) is Euler's totient function.

Table of values

List of values

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

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

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