A304752 - cp's OEIS frontend

A304752 Beginning with a(1) = 1, for n > 1, a(n) = the least divisor of a(n-1) not included earlier, otherwise a(n) = the least multiple ma(n-1) such that m is not a divisor of a(n-1) and ma(n-1) is not included earlier.

n	a(n)
1	1
2	2
3	6
4	3
5	12
6	4
7	20
8	5
9	10
10	30
11	15
12	60
13	420
14	7
15	14
16	42
17	21
18	84
19	28
20	140
21	35
22	70
23	210
24	105
25	630
26	9
27	18
28	72
29	8
30	24
31	120
32	40
33	240
34	16
35	48
36	336
37	56
38	168
39	840
40	280
41	1680
42	80
43	480
44	32
45	96
46	672
47	112
48	560
49	3360
50	160
51	960
52	64
53	192
54	1344
55	224
56	1120
57	6720
58	320
59	1920
60	128
61	384
62	2688
63	448
64	2240
65	13440
66	640
67	3840
68	256
69	768
70	5376
71	896
72	4480
73	26880
74	1280
75	7680
76	512

[1, 2, 6, 3, 12, 4, 20, 5, 10, 30, 15, 60, 420, 7, 14, 42, 21, 84, 28, 140, 35, 70, 210, 105, 630, 9, 18, 72, 8, 24, 120, 40, 240, 16, 48, 336, 56, 168, 840, 280, 1680, 80, 480, 32, 96, 672, 112, 560, 3360, 160, 960, 64, 192, 1344, 224, 1120, 6720, 320, 1920, 128, 384, 2688, 448, 2240, 13440, 640, 3840, 256, 768, 5376, 896, 4480, 26880, 1280, 7680, 512]

cp's OEIS Frontend

A304752 Beginning with a(1) = 1, for n > 1, a(n) = the least divisor of a(n-1) not included earlier, otherwise a(n) = the least multiple ma(n-1) such that m is not a divisor of a(n-1) and ma(n-1) is not included earlier.

Table of values

List of values

cp's OEIS Frontend

A304752 Beginning with a(1) = 1, for n > 1, a(n) = the least divisor of a(n-1) not included earlier, otherwise a(n) = the least multiple m*a(n-1) such that m is not a divisor of a(n-1) and m*a(n-1) is not included earlier.

Table of values

List of values

A304752 Beginning with a(1) = 1, for n > 1, a(n) = the least divisor of a(n-1) not included earlier, otherwise a(n) = the least multiple ma(n-1) such that m is not a divisor of a(n-1) and ma(n-1) is not included earlier.