A244991 - cp's OEIS frontend

A244991 Numbers whose greatest prime factor is a prime with an odd index; n such that A006530(n) is in A031368.

n	a(n)
1	2
2	4
3	5
4	8
5	10
6	11
7	15
8	16
9	17
10	20
11	22
12	23
13	25
14	30
15	31
16	32
17	33
18	34
19	40
20	41
21	44
22	45
23	46
24	47
25	50
26	51
27	55
28	59
29	60
30	62
31	64
32	66
33	67
34	68
35	69
36	73
37	75
38	77
39	80
40	82
41	83
42	85
43	88
44	90
45	92
46	93
47	94
48	97
49	99
50	100
51	102
52	103
53	109
54	110
55	115
56	118
57	119
58	120
59	121
60	123
61	124
62	125
63	127
64	128

[2, 4, 5, 8, 10, 11, 15, 16, 17, 20, 22, 23, 25, 30, 31, 32, 33, 34, 40, 41, 44, 45, 46, 47, 50, 51, 55, 59, 60, 62, 64, 66, 67, 68, 69, 73, 75, 77, 80, 82, 83, 85, 88, 90, 92, 93, 94, 97, 99, 100, 102, 103, 109, 110, 115, 118, 119, 120, 121, 123, 124, 125, 127, 128]

cp's OEIS Frontend

A244991 Numbers whose greatest prime factor is a prime with an odd index; n such that A006530(n) is in A031368.

Table of values

List of values

n	a(n)
1	2
2	4
3	5
4	8
5	10
6	11
7	15
8	16
9	17
10	20
11	22
12	23
13	25
14	30
15	31
16	32
17	33
18	34
19	40
20	41
21	44
22	45
23	46
24	47
25	50
26	51
27	55
28	59
29	60
30	62
31	64
32	66
33	67
34	68
35	69
36	73
37	75
38	77
39	80
40	82
41	83
42	85
43	88
44	90
45	92
46	93
47	94
48	97
49	99
50	100
51	102
52	103
53	109
54	110
55	115
56	118
57	119
58	120
59	121
60	123
61	124
62	125
63	127
64	128

n	a(n)
1	2
2	4
3	5
4	8
5	10
6	11
7	15
8	16
9	17
10	20
11	22
12	23
13	25
14	30
15	31
16	32
17	33
18	34
19	40
20	41
21	44
22	45
23	46
24	47
25	50
26	51
27	55
28	59
29	60
30	62
31	64
32	66
33	67
34	68
35	69
36	73
37	75
38	77
39	80
40	82
41	83
42	85
43	88
44	90
45	92
46	93
47	94
48	97
49	99
50	100
51	102
52	103
53	109
54	110
55	115
56	118
57	119
58	120
59	121
60	123
61	124
62	125
63	127
64	128

n	a(n)
1	2
2	4
3	5
4	8
5	10
6	11
7	15
8	16
9	17
10	20
11	22
12	23
13	25
14	30
15	31
16	32
17	33
18	34
19	40
20	41
21	44
22	45
23	46
24	47
25	50
26	51
27	55
28	59
29	60
30	62
31	64
32	66
33	67
34	68
35	69
36	73
37	75
38	77
39	80
40	82
41	83
42	85
43	88
44	90
45	92
46	93
47	94
48	97
49	99
50	100
51	102
52	103
53	109
54	110
55	115
56	118
57	119
58	120
59	121
60	123
61	124
62	125
63	127
64	128