A369002 - cp's OEIS frontend

A369002 Numbers k for which k' / gcd(k,k') is even, where k' stands for the arithmetic derivative of k, A003415.

n	a(n)
1	1
2	9
3	12
4	15
5	16
6	20
7	21
8	25
9	28
10	33
11	35
12	39
13	44
14	49
15	51
16	52
17	55
18	57
19	65
20	68
21	69
22	76
23	77
24	81
25	85
26	87
27	91
28	92
29	93
30	95
31	108
32	111
33	115
34	116
35	119
36	121
37	123
38	124
39	129
40	133
41	135
42	141
43	143
44	144
45	145
46	148
47	155
48	159
49	161
50	164
51	169
52	172
53	177
54	180
55	183
56	185
57	187
58	188
59	189
60	192
61	201
62	203
63	205
64	209
65	212
66	213
67	215
68	217
69	219
70	221

[1, 9, 12, 15, 16, 20, 21, 25, 28, 33, 35, 39, 44, 49, 51, 52, 55, 57, 65, 68, 69, 76, 77, 81, 85, 87, 91, 92, 93, 95, 108, 111, 115, 116, 119, 121, 123, 124, 129, 133, 135, 141, 143, 144, 145, 148, 155, 159, 161, 164, 169, 172, 177, 180, 183, 185, 187, 188, 189, 192, 201, 203, 205, 209, 212, 213, 215, 217, 219, 221]

cp's OEIS Frontend

A369002 Numbers k for which k' / gcd(k,k') is even, where k' stands for the arithmetic derivative of k, A003415.

Table of values

List of values

n	a(n)
1	1
2	9
3	12
4	15
5	16
6	20
7	21
8	25
9	28
10	33
11	35
12	39
13	44
14	49
15	51
16	52
17	55
18	57
19	65
20	68
21	69
22	76
23	77
24	81
25	85
26	87
27	91
28	92
29	93
30	95
31	108
32	111
33	115
34	116
35	119
36	121
37	123
38	124
39	129
40	133
41	135
42	141
43	143
44	144
45	145
46	148
47	155
48	159
49	161
50	164
51	169
52	172
53	177
54	180
55	183
56	185
57	187
58	188
59	189
60	192
61	201
62	203
63	205
64	209
65	212
66	213
67	215
68	217
69	219
70	221

n	a(n)
1	1
2	9
3	12
4	15
5	16
6	20
7	21
8	25
9	28
10	33
11	35
12	39
13	44
14	49
15	51
16	52
17	55
18	57
19	65
20	68
21	69
22	76
23	77
24	81
25	85
26	87
27	91
28	92
29	93
30	95
31	108
32	111
33	115
34	116
35	119
36	121
37	123
38	124
39	129
40	133
41	135
42	141
43	143
44	144
45	145
46	148
47	155
48	159
49	161
50	164
51	169
52	172
53	177
54	180
55	183
56	185
57	187
58	188
59	189
60	192
61	201
62	203
63	205
64	209
65	212
66	213
67	215
68	217
69	219
70	221

n	a(n)
1	1
2	9
3	12
4	15
5	16
6	20
7	21
8	25
9	28
10	33
11	35
12	39
13	44
14	49
15	51
16	52
17	55
18	57
19	65
20	68
21	69
22	76
23	77
24	81
25	85
26	87
27	91
28	92
29	93
30	95
31	108
32	111
33	115
34	116
35	119
36	121
37	123
38	124
39	129
40	133
41	135
42	141
43	143
44	144
45	145
46	148
47	155
48	159
49	161
50	164
51	169
52	172
53	177
54	180
55	183
56	185
57	187
58	188
59	189
60	192
61	201
62	203
63	205
64	209
65	212
66	213
67	215
68	217
69	219
70	221