A229269 - cp's OEIS frontend

A229269 Numbers k for which k - k' is prime, k' being the arithmetic derivative of k.

n	a(n)
1	3
2	9
3	10
4	14
5	15
6	21
7	26
8	33
9	35
10	38
11	39
12	50
13	51
14	62
15	65
16	66
17	69
18	70
19	77
20	78
21	86
22	91
23	93
24	95
25	102
26	110
27	111
28	114
29	122
30	123
31	129
32	130
33	133
34	138
35	146
36	154
37	159
38	161
39	170
40	174
41	190
42	201
43	203
44	206
45	209
46	213
47	215
48	217
49	218
50	221
51	222
52	230
53	238
54	249
55	258
56	278
57	282
58	287

[3, 9, 10, 14, 15, 21, 26, 33, 35, 38, 39, 50, 51, 62, 65, 66, 69, 70, 77, 78, 86, 91, 93, 95, 102, 110, 111, 114, 122, 123, 129, 130, 133, 138, 146, 154, 159, 161, 170, 174, 190, 201, 203, 206, 209, 213, 215, 217, 218, 221, 222, 230, 238, 249, 258, 278, 282, 287]

cp's OEIS Frontend

A229269 Numbers k for which k - k' is prime, k' being the arithmetic derivative of k.

Table of values

List of values

n	a(n)
1	3
2	9
3	10
4	14
5	15
6	21
7	26
8	33
9	35
10	38
11	39
12	50
13	51
14	62
15	65
16	66
17	69
18	70
19	77
20	78
21	86
22	91
23	93
24	95
25	102
26	110
27	111
28	114
29	122
30	123
31	129
32	130
33	133
34	138
35	146
36	154
37	159
38	161
39	170
40	174
41	190
42	201
43	203
44	206
45	209
46	213
47	215
48	217
49	218
50	221
51	222
52	230
53	238
54	249
55	258
56	278
57	282
58	287

n	a(n)
1	3
2	9
3	10
4	14
5	15
6	21
7	26
8	33
9	35
10	38
11	39
12	50
13	51
14	62
15	65
16	66
17	69
18	70
19	77
20	78
21	86
22	91
23	93
24	95
25	102
26	110
27	111
28	114
29	122
30	123
31	129
32	130
33	133
34	138
35	146
36	154
37	159
38	161
39	170
40	174
41	190
42	201
43	203
44	206
45	209
46	213
47	215
48	217
49	218
50	221
51	222
52	230
53	238
54	249
55	258
56	278
57	282
58	287

n	a(n)
1	3
2	9
3	10
4	14
5	15
6	21
7	26
8	33
9	35
10	38
11	39
12	50
13	51
14	62
15	65
16	66
17	69
18	70
19	77
20	78
21	86
22	91
23	93
24	95
25	102
26	110
27	111
28	114
29	122
30	123
31	129
32	130
33	133
34	138
35	146
36	154
37	159
38	161
39	170
40	174
41	190
42	201
43	203
44	206
45	209
46	213
47	215
48	217
49	218
50	221
51	222
52	230
53	238
54	249
55	258
56	278
57	282
58	287