A373488 - cp's OEIS frontend

A373488 Nonprime natural numbers k such that A276085(k) is a multiple of A003415(k), where A003415 is the arithmetic derivative and A276085 is the primorial base log-function.

n	a(n)
1	1
2	10
3	15
4	28
5	35
6	91
7	143
8	155
9	161
10	187
11	203
12	209
13	215
14	221
15	295
16	299
17	319
18	323
19	329
20	341
21	371
22	377
23	391
24	403
25	437
26	515
27	538
28	559
29	581
30	611
31	649
32	667
33	689
34	703
35	707
36	731
37	779
38	803
39	851
40	869
41	893
42	899
43	901
44	923
45	979
46	989
47	1037
48	1073
49	1081
50	1121
51	1139
52	1147
53	1189
54	1199
55	1207
56	1219
57	1261
58	1363
59	1391
60	1403
61	1457
62	1498

[1, 10, 15, 28, 35, 91, 143, 155, 161, 187, 203, 209, 215, 221, 295, 299, 319, 323, 329, 341, 371, 377, 391, 403, 437, 515, 538, 559, 581, 611, 649, 667, 689, 703, 707, 731, 779, 803, 851, 869, 893, 899, 901, 923, 979, 989, 1037, 1073, 1081, 1121, 1139, 1147, 1189, 1199, 1207, 1219, 1261, 1363, 1391, 1403, 1457, 1498]

cp's OEIS Frontend

A373488 Nonprime natural numbers k such that A276085(k) is a multiple of A003415(k), where A003415 is the arithmetic derivative and A276085 is the primorial base log-function.

Table of values

List of values