A051953 - cp's OEIS frontend

A051953 Cototient(n) := n - phi(n).

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

[0, 1, 1, 2, 1, 4, 1, 4, 3, 6, 1, 8, 1, 8, 7, 8, 1, 12, 1, 12, 9, 12, 1, 16, 5, 14, 9, 16, 1, 22, 1, 16, 13, 18, 11, 24, 1, 20, 15, 24, 1, 30, 1, 24, 21, 24, 1, 32, 7, 30, 19, 28, 1, 36, 15, 32, 21, 30, 1, 44, 1, 32, 27, 32, 17, 46, 1, 36, 25, 46, 1, 48, 1, 38, 35, 40, 17, 54, 1, 48, 27]

cp's OEIS Frontend

A051953 Cototient(n) := n - phi(n).

Table of values

List of values

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

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

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