A369664 - cp's OEIS frontend

A369664 Numbers k of the form 4m+1, whose arithmetic derivative k' is of the form 4u+2, and k' has an odd number of prime factors.

n	a(n)
1	65
2	77
3	141
4	161
5	185
6	201
7	209
8	221
9	301
10	305
11	321
12	341
13	365
14	377
15	381
16	413
17	437
18	453
19	481
20	485
21	497
22	501
23	537
24	545
25	589
26	649
27	681
28	689
29	717
30	721
31	729
32	737
33	745
34	749
35	785
36	789
37	849
38	893
39	901
40	905
41	917
42	921
43	989
44	1037
45	1073
46	1081
47	1101
48	1121
49	1133
50	1141
51	1157
52	1165
53	1169
54	1189
55	1205
56	1253
57	1261
58	1293
59	1313
60	1317

[65, 77, 141, 161, 185, 201, 209, 221, 301, 305, 321, 341, 365, 377, 381, 413, 437, 453, 481, 485, 497, 501, 537, 545, 589, 649, 681, 689, 717, 721, 729, 737, 745, 749, 785, 789, 849, 893, 901, 905, 917, 921, 989, 1037, 1073, 1081, 1101, 1121, 1133, 1141, 1157, 1165, 1169, 1189, 1205, 1253, 1261, 1293, 1313, 1317]

cp's OEIS Frontend

A369664 Numbers k of the form 4m+1, whose arithmetic derivative k' is of the form 4u+2, and k' has an odd number of prime factors.

Table of values

List of values