A328245 - cp's OEIS frontend

A328245 Numbers whose second arithmetic derivative (A068346) is a squarefree number (A005117), but the first derivative (A003415) is not.

n	a(n)
1	14
2	46
3	50
4	65
5	77
6	86
7	94
8	99
9	122
10	125
11	138
12	146
13	207
14	230
15	302
16	334
17	343
18	346
19	375
20	426
21	531
22	546
23	554
24	581
25	590
26	626
27	662
28	682
29	686
30	710
31	717
32	718
33	725
34	734
35	747
36	750
37	819
38	842
39	869
40	875
41	931
42	965
43	1002
44	1041
45	1083
46	1130
47	1145
48	1146
49	1166
50	1175
51	1202
52	1241
53	1265
54	1310
55	1331
56	1337
57	1349
58	1375
59	1418
60	1461
61	1466
62	1469
63	1501
64	1529
65	1541

[14, 46, 50, 65, 77, 86, 94, 99, 122, 125, 138, 146, 207, 230, 302, 334, 343, 346, 375, 426, 531, 546, 554, 581, 590, 626, 662, 682, 686, 710, 717, 718, 725, 734, 747, 750, 819, 842, 869, 875, 931, 965, 1002, 1041, 1083, 1130, 1145, 1146, 1166, 1175, 1202, 1241, 1265, 1310, 1331, 1337, 1349, 1375, 1418, 1461, 1466, 1469, 1501, 1529, 1541]

cp's OEIS Frontend

A328245 Numbers whose second arithmetic derivative (A068346) is a squarefree number (A005117), but the first derivative (A003415) is not.

Table of values

List of values