A176095 - cp's OEIS frontend

A176095 a(n) = n - phi(2*n), where phi() is the Euler totient A000010().

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

[0, 0, 1, 0, 1, 2, 1, 0, 3, 2, 1, 4, 1, 2, 7, 0, 1, 6, 1, 4, 9, 2, 1, 8, 5, 2, 9, 4, 1, 14, 1, 0, 13, 2, 11, 12, 1, 2, 15, 8, 1, 18, 1, 4, 21, 2, 1, 16, 7, 10, 19, 4, 1, 18, 15, 8, 21, 2, 1, 28, 1, 2, 27, 0, 17, 26, 1, 4, 25, 22, 1, 24, 1, 2, 35, 4, 17, 30, 1, 16, 27, 2, 1, 36, 21, 2, 31, 8, 1, 42, 19]

cp's OEIS Frontend

A176095 a(n) = n - phi(2*n), where phi() is the Euler totient A000010().

Table of values

List of values

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

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

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