A373478 - cp's OEIS frontend

A373478 Numbers k such that A001414(k) and A003415(k) are both multiples of 3, where A001414 is the sum of prime factors with repetition, and A003415 is the arithmetic derivative.

n	a(n)
1	1
2	8
3	9
4	14
5	20
6	26
7	27
8	35
9	38
10	44
11	50
12	62
13	64
14	65
15	68
16	72
17	74
18	77
19	81
20	86
21	92
22	95
23	110
24	112
25	116
26	119
27	122
28	125
29	126
30	134
31	143
32	146
33	155
34	158
35	160
36	161
37	164
38	170
39	180
40	185
41	188
42	194
43	196
44	203
45	206
46	208
47	209
48	212
49	215
50	216
51	218
52	221
53	230
54	234
55	236
56	242
57	243
58	254
59	275
60	278
61	280
62	284
63	287
64	290
65	299
66	302
67	304
68	305

[1, 8, 9, 14, 20, 26, 27, 35, 38, 44, 50, 62, 64, 65, 68, 72, 74, 77, 81, 86, 92, 95, 110, 112, 116, 119, 122, 125, 126, 134, 143, 146, 155, 158, 160, 161, 164, 170, 180, 185, 188, 194, 196, 203, 206, 208, 209, 212, 215, 216, 218, 221, 230, 234, 236, 242, 243, 254, 275, 278, 280, 284, 287, 290, 299, 302, 304, 305]

cp's OEIS Frontend

A373478 Numbers k such that A001414(k) and A003415(k) are both multiples of 3, where A001414 is the sum of prime factors with repetition, and A003415 is the arithmetic derivative.

Table of values

List of values

n	a(n)
1	1
2	8
3	9
4	14
5	20
6	26
7	27
8	35
9	38
10	44
11	50
12	62
13	64
14	65
15	68
16	72
17	74
18	77
19	81
20	86
21	92
22	95
23	110
24	112
25	116
26	119
27	122
28	125
29	126
30	134
31	143
32	146
33	155
34	158
35	160
36	161
37	164
38	170
39	180
40	185
41	188
42	194
43	196
44	203
45	206
46	208
47	209
48	212
49	215
50	216
51	218
52	221
53	230
54	234
55	236
56	242
57	243
58	254
59	275
60	278
61	280
62	284
63	287
64	290
65	299
66	302
67	304
68	305

n	a(n)
1	1
2	8
3	9
4	14
5	20
6	26
7	27
8	35
9	38
10	44
11	50
12	62
13	64
14	65
15	68
16	72
17	74
18	77
19	81
20	86
21	92
22	95
23	110
24	112
25	116
26	119
27	122
28	125
29	126
30	134
31	143
32	146
33	155
34	158
35	160
36	161
37	164
38	170
39	180
40	185
41	188
42	194
43	196
44	203
45	206
46	208
47	209
48	212
49	215
50	216
51	218
52	221
53	230
54	234
55	236
56	242
57	243
58	254
59	275
60	278
61	280
62	284
63	287
64	290
65	299
66	302
67	304
68	305

n	a(n)
1	1
2	8
3	9
4	14
5	20
6	26
7	27
8	35
9	38
10	44
11	50
12	62
13	64
14	65
15	68
16	72
17	74
18	77
19	81
20	86
21	92
22	95
23	110
24	112
25	116
26	119
27	122
28	125
29	126
30	134
31	143
32	146
33	155
34	158
35	160
36	161
37	164
38	170
39	180
40	185
41	188
42	194
43	196
44	203
45	206
46	208
47	209
48	212
49	215
50	216
51	218
52	221
53	230
54	234
55	236
56	242
57	243
58	254
59	275
60	278
61	280
62	284
63	287
64	290
65	299
66	302
67	304
68	305