A339910 - cp's OEIS frontend

A339910 After 1, numbers k > 1 such that k has fewer prime divisors than k-1, when they are counted with multiplicity.

n	a(n)
1	1
2	5
3	7
4	9
5	11
6	13
7	17
8	19
9	21
10	23
11	25
12	29
13	31
14	33
15	37
16	41
17	43
18	46
19	47
20	49
21	51
22	53
23	55
24	57
25	59
26	61
27	65
28	67
29	69
30	71
31	73
32	77
33	79
34	81
35	82
36	83
37	85
38	89
39	91
40	93
41	97
42	101
43	103
44	105
45	106
46	107
47	109
48	111
49	113
50	115
51	118
52	121
53	127
54	129
55	131
56	133
57	137
58	139
59	141
60	145
61	149
62	151
63	153
64	155
65	157
66	161
67	163
68	166
69	167
70	169
71	173
72	177
73	179

[1, 5, 7, 9, 11, 13, 17, 19, 21, 23, 25, 29, 31, 33, 37, 41, 43, 46, 47, 49, 51, 53, 55, 57, 59, 61, 65, 67, 69, 71, 73, 77, 79, 81, 82, 83, 85, 89, 91, 93, 97, 101, 103, 105, 106, 107, 109, 111, 113, 115, 118, 121, 127, 129, 131, 133, 137, 139, 141, 145, 149, 151, 153, 155, 157, 161, 163, 166, 167, 169, 173, 177, 179]

cp's OEIS Frontend

A339910 After 1, numbers k > 1 such that k has fewer prime divisors than k-1, when they are counted with multiplicity.

Table of values

List of values

n	a(n)
1	1
2	5
3	7
4	9
5	11
6	13
7	17
8	19
9	21
10	23
11	25
12	29
13	31
14	33
15	37
16	41
17	43
18	46
19	47
20	49
21	51
22	53
23	55
24	57
25	59
26	61
27	65
28	67
29	69
30	71
31	73
32	77
33	79
34	81
35	82
36	83
37	85
38	89
39	91
40	93
41	97
42	101
43	103
44	105
45	106
46	107
47	109
48	111
49	113
50	115
51	118
52	121
53	127
54	129
55	131
56	133
57	137
58	139
59	141
60	145
61	149
62	151
63	153
64	155
65	157
66	161
67	163
68	166
69	167
70	169
71	173
72	177
73	179

n	a(n)
1	1
2	5
3	7
4	9
5	11
6	13
7	17
8	19
9	21
10	23
11	25
12	29
13	31
14	33
15	37
16	41
17	43
18	46
19	47
20	49
21	51
22	53
23	55
24	57
25	59
26	61
27	65
28	67
29	69
30	71
31	73
32	77
33	79
34	81
35	82
36	83
37	85
38	89
39	91
40	93
41	97
42	101
43	103
44	105
45	106
46	107
47	109
48	111
49	113
50	115
51	118
52	121
53	127
54	129
55	131
56	133
57	137
58	139
59	141
60	145
61	149
62	151
63	153
64	155
65	157
66	161
67	163
68	166
69	167
70	169
71	173
72	177
73	179

n	a(n)
1	1
2	5
3	7
4	9
5	11
6	13
7	17
8	19
9	21
10	23
11	25
12	29
13	31
14	33
15	37
16	41
17	43
18	46
19	47
20	49
21	51
22	53
23	55
24	57
25	59
26	61
27	65
28	67
29	69
30	71
31	73
32	77
33	79
34	81
35	82
36	83
37	85
38	89
39	91
40	93
41	97
42	101
43	103
44	105
45	106
46	107
47	109
48	111
49	113
50	115
51	118
52	121
53	127
54	129
55	131
56	133
57	137
58	139
59	141
60	145
61	149
62	151
63	153
64	155
65	157
66	161
67	163
68	166
69	167
70	169
71	173
72	177
73	179