A271531 - cp's OEIS frontend

A271531 a(1) = 1; thereafter a(n) is the LCM of all 0 < m < n for which n == a(m) (mod m).

n	a(n)
1	1
2	1
3	2
4	1
5	12
6	1
7	30
8	3
9	28
10	9
11	24
12	5
13	132
14	3
15	26
16	7
17	420
18	1
19	360
20	3
21	4
22	5
23	1680
24	253
25	84
26	15
27	440
28	117
29	1020
30	7
31	42
32	15
33	28
34	725
35	2376
36	1
37	47880
38	3
39	2960
40	1
41	29640
42	155
43	120
44	21
45	476
46	11781
47	11040
48	1
49	2640
50	3
51	1288
52	5
53	300
54	13
55	144
56	285
57	2860
58	7
59	4200
60	1

[1, 1, 2, 1, 12, 1, 30, 3, 28, 9, 24, 5, 132, 3, 26, 7, 420, 1, 360, 3, 4, 5, 1680, 253, 84, 15, 440, 117, 1020, 7, 42, 15, 28, 725, 2376, 1, 47880, 3, 2960, 1, 29640, 155, 120, 21, 476, 11781, 11040, 1, 2640, 3, 1288, 5, 300, 13, 144, 285, 2860, 7, 4200, 1]

cp's OEIS Frontend

A271531 a(1) = 1; thereafter a(n) is the LCM of all 0 < m < n for which n == a(m) (mod m).

Table of values

List of values