A272872 - cp's OEIS frontend

A272872 Numbers k such that k+1 is divisible by number of divisors of k.

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	13
7	15
8	17
9	19
10	23
11	27
12	29
13	31
14	35
15	37
16	39
17	41
18	43
19	47
20	51
21	53
22	55
23	59
24	61
25	67
26	71
27	73
28	79
29	83
30	87
31	89
32	91
33	95
34	97
35	101
36	103
37	107
38	109
39	111
40	113
41	115
42	119
43	123
44	127
45	131
46	135
47	137
48	139
49	143
50	149
51	151
52	155
53	157
54	159
55	163
56	167

[1, 3, 5, 7, 11, 13, 15, 17, 19, 23, 27, 29, 31, 35, 37, 39, 41, 43, 47, 51, 53, 55, 59, 61, 67, 71, 73, 79, 83, 87, 89, 91, 95, 97, 101, 103, 107, 109, 111, 113, 115, 119, 123, 127, 131, 135, 137, 139, 143, 149, 151, 155, 157, 159, 163, 167]

cp's OEIS Frontend

A272872 Numbers k such that k+1 is divisible by number of divisors of k.

Table of values

List of values

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	13
7	15
8	17
9	19
10	23
11	27
12	29
13	31
14	35
15	37
16	39
17	41
18	43
19	47
20	51
21	53
22	55
23	59
24	61
25	67
26	71
27	73
28	79
29	83
30	87
31	89
32	91
33	95
34	97
35	101
36	103
37	107
38	109
39	111
40	113
41	115
42	119
43	123
44	127
45	131
46	135
47	137
48	139
49	143
50	149
51	151
52	155
53	157
54	159
55	163
56	167

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	13
7	15
8	17
9	19
10	23
11	27
12	29
13	31
14	35
15	37
16	39
17	41
18	43
19	47
20	51
21	53
22	55
23	59
24	61
25	67
26	71
27	73
28	79
29	83
30	87
31	89
32	91
33	95
34	97
35	101
36	103
37	107
38	109
39	111
40	113
41	115
42	119
43	123
44	127
45	131
46	135
47	137
48	139
49	143
50	149
51	151
52	155
53	157
54	159
55	163
56	167

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	13
7	15
8	17
9	19
10	23
11	27
12	29
13	31
14	35
15	37
16	39
17	41
18	43
19	47
20	51
21	53
22	55
23	59
24	61
25	67
26	71
27	73
28	79
29	83
30	87
31	89
32	91
33	95
34	97
35	101
36	103
37	107
38	109
39	111
40	113
41	115
42	119
43	123
44	127
45	131
46	135
47	137
48	139
49	143
50	149
51	151
52	155
53	157
54	159
55	163
56	167