A373144 - cp's OEIS frontend

A373144 Numbers k such that both A003415(k) and A276085(k) are multiples of 3, where A003415 is the arithmetic derivative and A276085 is the primorial base log-function.

n	a(n)
1	1
2	8
3	27
4	35
5	36
6	64
7	65
8	77
9	95
10	119
11	125
12	135
13	143
14	155
15	161
16	162
17	180
18	185
19	189
20	203
21	209
22	215
23	216
24	221
25	252
26	275
27	280
28	287
29	288
30	297
31	299
32	305
33	323
34	329
35	335
36	341
37	343
38	351
39	365
40	371
41	377
42	395
43	396
44	407
45	413
46	425
47	437
48	459
49	468
50	473
51	485
52	497
53	512
54	513
55	515
56	520
57	527
58	533
59	545
60	551
61	575
62	581
63	605
64	611
65	612
66	616

[1, 8, 27, 35, 36, 64, 65, 77, 95, 119, 125, 135, 143, 155, 161, 162, 180, 185, 189, 203, 209, 215, 216, 221, 252, 275, 280, 287, 288, 297, 299, 305, 323, 329, 335, 341, 343, 351, 365, 371, 377, 395, 396, 407, 413, 425, 437, 459, 468, 473, 485, 497, 512, 513, 515, 520, 527, 533, 545, 551, 575, 581, 605, 611, 612, 616]

cp's OEIS Frontend

A373144 Numbers k such that both A003415(k) and A276085(k) are multiples of 3, where A003415 is the arithmetic derivative and A276085 is the primorial base log-function.

Table of values

List of values

n	a(n)
1	1
2	8
3	27
4	35
5	36
6	64
7	65
8	77
9	95
10	119
11	125
12	135
13	143
14	155
15	161
16	162
17	180
18	185
19	189
20	203
21	209
22	215
23	216
24	221
25	252
26	275
27	280
28	287
29	288
30	297
31	299
32	305
33	323
34	329
35	335
36	341
37	343
38	351
39	365
40	371
41	377
42	395
43	396
44	407
45	413
46	425
47	437
48	459
49	468
50	473
51	485
52	497
53	512
54	513
55	515
56	520
57	527
58	533
59	545
60	551
61	575
62	581
63	605
64	611
65	612
66	616

n	a(n)
1	1
2	8
3	27
4	35
5	36
6	64
7	65
8	77
9	95
10	119
11	125
12	135
13	143
14	155
15	161
16	162
17	180
18	185
19	189
20	203
21	209
22	215
23	216
24	221
25	252
26	275
27	280
28	287
29	288
30	297
31	299
32	305
33	323
34	329
35	335
36	341
37	343
38	351
39	365
40	371
41	377
42	395
43	396
44	407
45	413
46	425
47	437
48	459
49	468
50	473
51	485
52	497
53	512
54	513
55	515
56	520
57	527
58	533
59	545
60	551
61	575
62	581
63	605
64	611
65	612
66	616

n	a(n)
1	1
2	8
3	27
4	35
5	36
6	64
7	65
8	77
9	95
10	119
11	125
12	135
13	143
14	155
15	161
16	162
17	180
18	185
19	189
20	203
21	209
22	215
23	216
24	221
25	252
26	275
27	280
28	287
29	288
30	297
31	299
32	305
33	323
34	329
35	335
36	341
37	343
38	351
39	365
40	371
41	377
42	395
43	396
44	407
45	413
46	425
47	437
48	459
49	468
50	473
51	485
52	497
53	512
54	513
55	515
56	520
57	527
58	533
59	545
60	551
61	575
62	581
63	605
64	611
65	612
66	616