A368998 - cp's OEIS frontend

A368998 Numbers k such that A003415(k) and A276085(k) are both even, where A003415 is the arithmetic derivative and A276085 is the primorial base log-function; Numbers k for which A342001(k) is even.

n	a(n)
1	1
2	4
3	9
4	12
5	15
6	16
7	20
8	21
9	25
10	28
11	33
12	35
13	36
14	39
15	44
16	48
17	49
18	51
19	52
20	55
21	57
22	60
23	64
24	65
25	68
26	69
27	76
28	77
29	80
30	81
31	84
32	85
33	87
34	91
35	92
36	93
37	95
38	100
39	108
40	111
41	112
42	115
43	116
44	119
45	121
46	123
47	124
48	129
49	132
50	133
51	135
52	140
53	141
54	143
55	144
56	145
57	148
58	155
59	156
60	159
61	161
62	164
63	169
64	172
65	176
66	177
67	180
68	183
69	185
70	187
71	188
72	189

[1, 4, 9, 12, 15, 16, 20, 21, 25, 28, 33, 35, 36, 39, 44, 48, 49, 51, 52, 55, 57, 60, 64, 65, 68, 69, 76, 77, 80, 81, 84, 85, 87, 91, 92, 93, 95, 100, 108, 111, 112, 115, 116, 119, 121, 123, 124, 129, 132, 133, 135, 140, 141, 143, 144, 145, 148, 155, 156, 159, 161, 164, 169, 172, 176, 177, 180, 183, 185, 187, 188, 189]

cp's OEIS Frontend

A368998 Numbers k such that A003415(k) and A276085(k) are both even, where A003415 is the arithmetic derivative and A276085 is the primorial base log-function; Numbers k for which A342001(k) is even.

Table of values

List of values

n	a(n)
1	1
2	4
3	9
4	12
5	15
6	16
7	20
8	21
9	25
10	28
11	33
12	35
13	36
14	39
15	44
16	48
17	49
18	51
19	52
20	55
21	57
22	60
23	64
24	65
25	68
26	69
27	76
28	77
29	80
30	81
31	84
32	85
33	87
34	91
35	92
36	93
37	95
38	100
39	108
40	111
41	112
42	115
43	116
44	119
45	121
46	123
47	124
48	129
49	132
50	133
51	135
52	140
53	141
54	143
55	144
56	145
57	148
58	155
59	156
60	159
61	161
62	164
63	169
64	172
65	176
66	177
67	180
68	183
69	185
70	187
71	188
72	189

n	a(n)
1	1
2	4
3	9
4	12
5	15
6	16
7	20
8	21
9	25
10	28
11	33
12	35
13	36
14	39
15	44
16	48
17	49
18	51
19	52
20	55
21	57
22	60
23	64
24	65
25	68
26	69
27	76
28	77
29	80
30	81
31	84
32	85
33	87
34	91
35	92
36	93
37	95
38	100
39	108
40	111
41	112
42	115
43	116
44	119
45	121
46	123
47	124
48	129
49	132
50	133
51	135
52	140
53	141
54	143
55	144
56	145
57	148
58	155
59	156
60	159
61	161
62	164
63	169
64	172
65	176
66	177
67	180
68	183
69	185
70	187
71	188
72	189

n	a(n)
1	1
2	4
3	9
4	12
5	15
6	16
7	20
8	21
9	25
10	28
11	33
12	35
13	36
14	39
15	44
16	48
17	49
18	51
19	52
20	55
21	57
22	60
23	64
24	65
25	68
26	69
27	76
28	77
29	80
30	81
31	84
32	85
33	87
34	91
35	92
36	93
37	95
38	100
39	108
40	111
41	112
42	115
43	116
44	119
45	121
46	123
47	124
48	129
49	132
50	133
51	135
52	140
53	141
54	143
55	144
56	145
57	148
58	155
59	156
60	159
61	161
62	164
63	169
64	172
65	176
66	177
67	180
68	183
69	185
70	187
71	188
72	189