A339879 - cp's OEIS frontend

A339879 Numbers k for which k-1 is a multiple of A053575(k) [the odd part of phi(k)].

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	10
10	11
11	12
12	13
13	15
14	16
15	17
16	19
17	20
18	23
19	24
20	28
21	29
22	30
23	31
24	32
25	34
26	37
27	40
28	41
29	43
30	47
31	48
32	51
33	52
34	53
35	59
36	60
37	61
38	64
39	66
40	67
41	68
42	70
43	71
44	73
45	79
46	80
47	83
48	85
49	89
50	91
51	96
52	97
53	101
54	102
55	103
56	107
57	109
58	112
59	113
60	120
61	127
62	128
63	130
64	131
65	136
66	137
67	139
68	149
69	151
70	157
71	160
72	163
73	167
74	170
75	173
76	176
77	179

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 19, 20, 23, 24, 28, 29, 30, 31, 32, 34, 37, 40, 41, 43, 47, 48, 51, 52, 53, 59, 60, 61, 64, 66, 67, 68, 70, 71, 73, 79, 80, 83, 85, 89, 91, 96, 97, 101, 102, 103, 107, 109, 112, 113, 120, 127, 128, 130, 131, 136, 137, 139, 149, 151, 157, 160, 163, 167, 170, 173, 176, 179]

cp's OEIS Frontend

A339879 Numbers k for which k-1 is a multiple of A053575(k) [the odd part of phi(k)].

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	10
10	11
11	12
12	13
13	15
14	16
15	17
16	19
17	20
18	23
19	24
20	28
21	29
22	30
23	31
24	32
25	34
26	37
27	40
28	41
29	43
30	47
31	48
32	51
33	52
34	53
35	59
36	60
37	61
38	64
39	66
40	67
41	68
42	70
43	71
44	73
45	79
46	80
47	83
48	85
49	89
50	91
51	96
52	97
53	101
54	102
55	103
56	107
57	109
58	112
59	113
60	120
61	127
62	128
63	130
64	131
65	136
66	137
67	139
68	149
69	151
70	157
71	160
72	163
73	167
74	170
75	173
76	176
77	179

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	10
10	11
11	12
12	13
13	15
14	16
15	17
16	19
17	20
18	23
19	24
20	28
21	29
22	30
23	31
24	32
25	34
26	37
27	40
28	41
29	43
30	47
31	48
32	51
33	52
34	53
35	59
36	60
37	61
38	64
39	66
40	67
41	68
42	70
43	71
44	73
45	79
46	80
47	83
48	85
49	89
50	91
51	96
52	97
53	101
54	102
55	103
56	107
57	109
58	112
59	113
60	120
61	127
62	128
63	130
64	131
65	136
66	137
67	139
68	149
69	151
70	157
71	160
72	163
73	167
74	170
75	173
76	176
77	179

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	10
10	11
11	12
12	13
13	15
14	16
15	17
16	19
17	20
18	23
19	24
20	28
21	29
22	30
23	31
24	32
25	34
26	37
27	40
28	41
29	43
30	47
31	48
32	51
33	52
34	53
35	59
36	60
37	61
38	64
39	66
40	67
41	68
42	70
43	71
44	73
45	79
46	80
47	83
48	85
49	89
50	91
51	96
52	97
53	101
54	102
55	103
56	107
57	109
58	112
59	113
60	120
61	127
62	128
63	130
64	131
65	136
66	137
67	139
68	149
69	151
70	157
71	160
72	163
73	167
74	170
75	173
76	176
77	179