A365059 - cp's OEIS frontend

A365059 a(1) = 2; for n > 2, a(n) is the smallest positive number that has not yet appeared that is a multiple of A008472(a(n-1)), the sum of the distinct primes dividing a(n-1).

n	a(n)
1	2
2	4
3	6
4	5
5	10
6	7
7	14
8	9
9	3
10	12
11	15
12	8
13	16
14	18
15	20
16	21
17	30
18	40
19	28
20	27
21	24
22	25
23	35
24	36
25	45
26	32
27	22
28	13
29	26
30	60
31	50
32	42
33	48
34	55
35	64
36	34
37	19
38	38
39	63
40	70
41	56
42	54
43	65
44	72
45	75
46	80
47	49
48	77
49	90
50	100
51	84
52	96
53	85
54	44
55	39
56	112
57	81
58	33
59	98
60	99
61	126
62	108
63	95
64	120
65	110
66	144
67	105
68	135
69	88
70	52
71	150
72	130
73	140

[2, 4, 6, 5, 10, 7, 14, 9, 3, 12, 15, 8, 16, 18, 20, 21, 30, 40, 28, 27, 24, 25, 35, 36, 45, 32, 22, 13, 26, 60, 50, 42, 48, 55, 64, 34, 19, 38, 63, 70, 56, 54, 65, 72, 75, 80, 49, 77, 90, 100, 84, 96, 85, 44, 39, 112, 81, 33, 98, 99, 126, 108, 95, 120, 110, 144, 105, 135, 88, 52, 150, 130, 140]

cp's OEIS Frontend

A365059 a(1) = 2; for n > 2, a(n) is the smallest positive number that has not yet appeared that is a multiple of A008472(a(n-1)), the sum of the distinct primes dividing a(n-1).

Table of values

List of values

n	a(n)
1	2
2	4
3	6
4	5
5	10
6	7
7	14
8	9
9	3
10	12
11	15
12	8
13	16
14	18
15	20
16	21
17	30
18	40
19	28
20	27
21	24
22	25
23	35
24	36
25	45
26	32
27	22
28	13
29	26
30	60
31	50
32	42
33	48
34	55
35	64
36	34
37	19
38	38
39	63
40	70
41	56
42	54
43	65
44	72
45	75
46	80
47	49
48	77
49	90
50	100
51	84
52	96
53	85
54	44
55	39
56	112
57	81
58	33
59	98
60	99
61	126
62	108
63	95
64	120
65	110
66	144
67	105
68	135
69	88
70	52
71	150
72	130
73	140

n	a(n)
1	2
2	4
3	6
4	5
5	10
6	7
7	14
8	9
9	3
10	12
11	15
12	8
13	16
14	18
15	20
16	21
17	30
18	40
19	28
20	27
21	24
22	25
23	35
24	36
25	45
26	32
27	22
28	13
29	26
30	60
31	50
32	42
33	48
34	55
35	64
36	34
37	19
38	38
39	63
40	70
41	56
42	54
43	65
44	72
45	75
46	80
47	49
48	77
49	90
50	100
51	84
52	96
53	85
54	44
55	39
56	112
57	81
58	33
59	98
60	99
61	126
62	108
63	95
64	120
65	110
66	144
67	105
68	135
69	88
70	52
71	150
72	130
73	140

n	a(n)
1	2
2	4
3	6
4	5
5	10
6	7
7	14
8	9
9	3
10	12
11	15
12	8
13	16
14	18
15	20
16	21
17	30
18	40
19	28
20	27
21	24
22	25
23	35
24	36
25	45
26	32
27	22
28	13
29	26
30	60
31	50
32	42
33	48
34	55
35	64
36	34
37	19
38	38
39	63
40	70
41	56
42	54
43	65
44	72
45	75
46	80
47	49
48	77
49	90
50	100
51	84
52	96
53	85
54	44
55	39
56	112
57	81
58	33
59	98
60	99
61	126
62	108
63	95
64	120
65	110
66	144
67	105
68	135
69	88
70	52
71	150
72	130
73	140