A244990 - cp's OEIS frontend

A244990 After 1, numbers whose greatest prime factor is a prime with an even index; n such that A061395(n) is even.

n	a(n)
1	1
2	3
3	6
4	7
5	9
6	12
7	13
8	14
9	18
10	19
11	21
12	24
13	26
14	27
15	28
16	29
17	35
18	36
19	37
20	38
21	39
22	42
23	43
24	48
25	49
26	52
27	53
28	54
29	56
30	57
31	58
32	61
33	63
34	65
35	70
36	71
37	72
38	74
39	76
40	78
41	79
42	81
43	84
44	86
45	87
46	89
47	91
48	95
49	96
50	98
51	101
52	104
53	105
54	106
55	107
56	108
57	111
58	112
59	113
60	114
61	116
62	117
63	122
64	126
65	129
66	130
67	131
68	133
69	139
70	140
71	142
72	143
73	144

[1, 3, 6, 7, 9, 12, 13, 14, 18, 19, 21, 24, 26, 27, 28, 29, 35, 36, 37, 38, 39, 42, 43, 48, 49, 52, 53, 54, 56, 57, 58, 61, 63, 65, 70, 71, 72, 74, 76, 78, 79, 81, 84, 86, 87, 89, 91, 95, 96, 98, 101, 104, 105, 106, 107, 108, 111, 112, 113, 114, 116, 117, 122, 126, 129, 130, 131, 133, 139, 140, 142, 143, 144]

cp's OEIS Frontend

A244990 After 1, numbers whose greatest prime factor is a prime with an even index; n such that A061395(n) is even.

Table of values

List of values

n	a(n)
1	1
2	3
3	6
4	7
5	9
6	12
7	13
8	14
9	18
10	19
11	21
12	24
13	26
14	27
15	28
16	29
17	35
18	36
19	37
20	38
21	39
22	42
23	43
24	48
25	49
26	52
27	53
28	54
29	56
30	57
31	58
32	61
33	63
34	65
35	70
36	71
37	72
38	74
39	76
40	78
41	79
42	81
43	84
44	86
45	87
46	89
47	91
48	95
49	96
50	98
51	101
52	104
53	105
54	106
55	107
56	108
57	111
58	112
59	113
60	114
61	116
62	117
63	122
64	126
65	129
66	130
67	131
68	133
69	139
70	140
71	142
72	143
73	144

n	a(n)
1	1
2	3
3	6
4	7
5	9
6	12
7	13
8	14
9	18
10	19
11	21
12	24
13	26
14	27
15	28
16	29
17	35
18	36
19	37
20	38
21	39
22	42
23	43
24	48
25	49
26	52
27	53
28	54
29	56
30	57
31	58
32	61
33	63
34	65
35	70
36	71
37	72
38	74
39	76
40	78
41	79
42	81
43	84
44	86
45	87
46	89
47	91
48	95
49	96
50	98
51	101
52	104
53	105
54	106
55	107
56	108
57	111
58	112
59	113
60	114
61	116
62	117
63	122
64	126
65	129
66	130
67	131
68	133
69	139
70	140
71	142
72	143
73	144

n	a(n)
1	1
2	3
3	6
4	7
5	9
6	12
7	13
8	14
9	18
10	19
11	21
12	24
13	26
14	27
15	28
16	29
17	35
18	36
19	37
20	38
21	39
22	42
23	43
24	48
25	49
26	52
27	53
28	54
29	56
30	57
31	58
32	61
33	63
34	65
35	70
36	71
37	72
38	74
39	76
40	78
41	79
42	81
43	84
44	86
45	87
46	89
47	91
48	95
49	96
50	98
51	101
52	104
53	105
54	106
55	107
56	108
57	111
58	112
59	113
60	114
61	116
62	117
63	122
64	126
65	129
66	130
67	131
68	133
69	139
70	140
71	142
72	143
73	144