A063742 - cp's OEIS frontend

A063742 Cototients: numbers k such that x - phi(x) = k has at least one solution.

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

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

cp's OEIS Frontend

A063742 Cototients: numbers k such that x - phi(x) = k has at least one solution.

Table of values

List of values

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

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

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