A353026 - cp's OEIS frontend

A353026 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest positive number that has not appeared that is a multiple of the smallest prime factor with minimal exponent of a(n-1) (cf. A067695).

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	10
7	12
8	3
9	9
10	15
11	18
12	14
13	16
14	20
15	5
16	25
17	30
18	22
19	24
20	21
21	27
22	33
23	36
24	26
25	28
26	7
27	35
28	40
29	45
30	50
31	32
32	34
33	38
34	42
35	44
36	11
37	55
38	60
39	39
40	48
41	51
42	54
43	46
44	52
45	13
46	65
47	70
48	56
49	49
50	63
51	77
52	84
53	57
54	66
55	58
56	62
57	64
58	68
59	17
60	85
61	75
62	69
63	72
64	78
65	74
66	76
67	19
68	95
69	80
70	90
71	82
72	86
73	88
74	99
75	110

[1, 2, 4, 6, 8, 10, 12, 3, 9, 15, 18, 14, 16, 20, 5, 25, 30, 22, 24, 21, 27, 33, 36, 26, 28, 7, 35, 40, 45, 50, 32, 34, 38, 42, 44, 11, 55, 60, 39, 48, 51, 54, 46, 52, 13, 65, 70, 56, 49, 63, 77, 84, 57, 66, 58, 62, 64, 68, 17, 85, 75, 69, 72, 78, 74, 76, 19, 95, 80, 90, 82, 86, 88, 99, 110]

cp's OEIS Frontend

A353026 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest positive number that has not appeared that is a multiple of the smallest prime factor with minimal exponent of a(n-1) (cf. A067695).

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	10
7	12
8	3
9	9
10	15
11	18
12	14
13	16
14	20
15	5
16	25
17	30
18	22
19	24
20	21
21	27
22	33
23	36
24	26
25	28
26	7
27	35
28	40
29	45
30	50
31	32
32	34
33	38
34	42
35	44
36	11
37	55
38	60
39	39
40	48
41	51
42	54
43	46
44	52
45	13
46	65
47	70
48	56
49	49
50	63
51	77
52	84
53	57
54	66
55	58
56	62
57	64
58	68
59	17
60	85
61	75
62	69
63	72
64	78
65	74
66	76
67	19
68	95
69	80
70	90
71	82
72	86
73	88
74	99
75	110

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	10
7	12
8	3
9	9
10	15
11	18
12	14
13	16
14	20
15	5
16	25
17	30
18	22
19	24
20	21
21	27
22	33
23	36
24	26
25	28
26	7
27	35
28	40
29	45
30	50
31	32
32	34
33	38
34	42
35	44
36	11
37	55
38	60
39	39
40	48
41	51
42	54
43	46
44	52
45	13
46	65
47	70
48	56
49	49
50	63
51	77
52	84
53	57
54	66
55	58
56	62
57	64
58	68
59	17
60	85
61	75
62	69
63	72
64	78
65	74
66	76
67	19
68	95
69	80
70	90
71	82
72	86
73	88
74	99
75	110

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	10
7	12
8	3
9	9
10	15
11	18
12	14
13	16
14	20
15	5
16	25
17	30
18	22
19	24
20	21
21	27
22	33
23	36
24	26
25	28
26	7
27	35
28	40
29	45
30	50
31	32
32	34
33	38
34	42
35	44
36	11
37	55
38	60
39	39
40	48
41	51
42	54
43	46
44	52
45	13
46	65
47	70
48	56
49	49
50	63
51	77
52	84
53	57
54	66
55	58
56	62
57	64
58	68
59	17
60	85
61	75
62	69
63	72
64	78
65	74
66	76
67	19
68	95
69	80
70	90
71	82
72	86
73	88
74	99
75	110