A348284 - cp's OEIS frontend

A348284 Numbers k such that k | k" where k" is the 2nd arithmetic derivative of k.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	11
9	13
10	16
11	17
12	19
13	23
14	24
15	27
16	29
17	31
18	37
19	41
20	43
21	47
22	48
23	53
24	54
25	59
26	61
27	64
28	67
29	71
30	73
31	79
32	83
33	89
34	97
35	101
36	103
37	107
38	108
39	109
40	113
41	127
42	128
43	131
44	137
45	139
46	149
47	151
48	157
49	162
50	163
51	167
52	168
53	173
54	179
55	181
56	191
57	193
58	197
59	199
60	211
61	223
62	227
63	229
64	233

[1, 2, 3, 4, 5, 7, 8, 11, 13, 16, 17, 19, 23, 24, 27, 29, 31, 37, 41, 43, 47, 48, 53, 54, 59, 61, 64, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 108, 109, 113, 127, 128, 131, 137, 139, 149, 151, 157, 162, 163, 167, 168, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233]

cp's OEIS Frontend

A348284 Numbers k such that k | k" where k" is the 2nd arithmetic derivative of k.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	11
9	13
10	16
11	17
12	19
13	23
14	24
15	27
16	29
17	31
18	37
19	41
20	43
21	47
22	48
23	53
24	54
25	59
26	61
27	64
28	67
29	71
30	73
31	79
32	83
33	89
34	97
35	101
36	103
37	107
38	108
39	109
40	113
41	127
42	128
43	131
44	137
45	139
46	149
47	151
48	157
49	162
50	163
51	167
52	168
53	173
54	179
55	181
56	191
57	193
58	197
59	199
60	211
61	223
62	227
63	229
64	233

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	11
9	13
10	16
11	17
12	19
13	23
14	24
15	27
16	29
17	31
18	37
19	41
20	43
21	47
22	48
23	53
24	54
25	59
26	61
27	64
28	67
29	71
30	73
31	79
32	83
33	89
34	97
35	101
36	103
37	107
38	108
39	109
40	113
41	127
42	128
43	131
44	137
45	139
46	149
47	151
48	157
49	162
50	163
51	167
52	168
53	173
54	179
55	181
56	191
57	193
58	197
59	199
60	211
61	223
62	227
63	229
64	233

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	11
9	13
10	16
11	17
12	19
13	23
14	24
15	27
16	29
17	31
18	37
19	41
20	43
21	47
22	48
23	53
24	54
25	59
26	61
27	64
28	67
29	71
30	73
31	79
32	83
33	89
34	97
35	101
36	103
37	107
38	108
39	109
40	113
41	127
42	128
43	131
44	137
45	139
46	149
47	151
48	157
49	162
50	163
51	167
52	168
53	173
54	179
55	181
56	191
57	193
58	197
59	199
60	211
61	223
62	227
63	229
64	233