A326927 - cp's OEIS frontend

A326927 Lexicographically earliest sequence of distinct positive integers such that for any n > 0, a(n+1)/a(n) = p^x * q^y where p and q are two distinct prime numbers and {abs(x), abs(y)} = {1, 2}.

n	a(n)
1	1
2	12
3	9
4	2
5	24
6	18
7	4
8	3
9	25
10	7
11	84
12	48
13	36
14	8
15	6
16	27
17	15
18	20
19	16
20	28
21	21
22	75
23	33
24	44
25	55
26	45
27	10
28	98
29	22
30	50
31	14
32	63
33	35
34	125
35	65
36	52
37	39
38	147
39	51
40	68
41	85
42	153
43	34
44	242
45	26
46	117
47	81
48	99
49	77
50	175
51	49
52	5
53	60
54	80
55	64
56	112
57	140
58	105
59	135
60	30
61	40
62	32
63	56
64	42
65	54

[1, 12, 9, 2, 24, 18, 4, 3, 25, 7, 84, 48, 36, 8, 6, 27, 15, 20, 16, 28, 21, 75, 33, 44, 55, 45, 10, 98, 22, 50, 14, 63, 35, 125, 65, 52, 39, 147, 51, 68, 85, 153, 34, 242, 26, 117, 81, 99, 77, 175, 49, 5, 60, 80, 64, 112, 140, 105, 135, 30, 40, 32, 56, 42, 54]

cp's OEIS Frontend

A326927 Lexicographically earliest sequence of distinct positive integers such that for any n > 0, a(n+1)/a(n) = p^x * q^y where p and q are two distinct prime numbers and {abs(x), abs(y)} = {1, 2}.

Table of values

List of values

n	a(n)
1	1
2	12
3	9
4	2
5	24
6	18
7	4
8	3
9	25
10	7
11	84
12	48
13	36
14	8
15	6
16	27
17	15
18	20
19	16
20	28
21	21
22	75
23	33
24	44
25	55
26	45
27	10
28	98
29	22
30	50
31	14
32	63
33	35
34	125
35	65
36	52
37	39
38	147
39	51
40	68
41	85
42	153
43	34
44	242
45	26
46	117
47	81
48	99
49	77
50	175
51	49
52	5
53	60
54	80
55	64
56	112
57	140
58	105
59	135
60	30
61	40
62	32
63	56
64	42
65	54

n	a(n)
1	1
2	12
3	9
4	2
5	24
6	18
7	4
8	3
9	25
10	7
11	84
12	48
13	36
14	8
15	6
16	27
17	15
18	20
19	16
20	28
21	21
22	75
23	33
24	44
25	55
26	45
27	10
28	98
29	22
30	50
31	14
32	63
33	35
34	125
35	65
36	52
37	39
38	147
39	51
40	68
41	85
42	153
43	34
44	242
45	26
46	117
47	81
48	99
49	77
50	175
51	49
52	5
53	60
54	80
55	64
56	112
57	140
58	105
59	135
60	30
61	40
62	32
63	56
64	42
65	54

n	a(n)
1	1
2	12
3	9
4	2
5	24
6	18
7	4
8	3
9	25
10	7
11	84
12	48
13	36
14	8
15	6
16	27
17	15
18	20
19	16
20	28
21	21
22	75
23	33
24	44
25	55
26	45
27	10
28	98
29	22
30	50
31	14
32	63
33	35
34	125
35	65
36	52
37	39
38	147
39	51
40	68
41	85
42	153
43	34
44	242
45	26
46	117
47	81
48	99
49	77
50	175
51	49
52	5
53	60
54	80
55	64
56	112
57	140
58	105
59	135
60	30
61	40
62	32
63	56
64	42
65	54