A271773 - cp's OEIS frontend

A271773 a(1) = 0, then a(n) is the maximum of all 0 < m < n for which n == a(m) (mod m).

n	a(n)
1	0
2	1
3	2
4	1
5	4
6	1
7	6
8	3
9	5
10	1
11	10
12	1
13	12
14	9
15	2
16	1
17	16
18	1
19	18
20	7
21	11
22	1
23	22
24	5
25	13
26	3
27	20
28	1
29	28
30	1
31	30
32	21
33	17
34	7
35	8
36	1
37	36
38	25
39	5
40	1
41	40
42	1
43	42
44	39
45	23
46	1
47	46
48	7
49	16
50	33
51	14
52	1
53	52
54	11
55	48
56	19
57	29
58	1
59	58
60	1
61	60
62	15
63	38
64	13
65	54
66	1
67	66
68	45
69	7
70	1
71	70
72	1
73	72
74	27

[0, 1, 2, 1, 4, 1, 6, 3, 5, 1, 10, 1, 12, 9, 2, 1, 16, 1, 18, 7, 11, 1, 22, 5, 13, 3, 20, 1, 28, 1, 30, 21, 17, 7, 8, 1, 36, 25, 5, 1, 40, 1, 42, 39, 23, 1, 46, 7, 16, 33, 14, 1, 52, 11, 48, 19, 29, 1, 58, 1, 60, 15, 38, 13, 54, 1, 66, 45, 7, 1, 70, 1, 72, 27]

cp's OEIS Frontend

A271773 a(1) = 0, then a(n) is the maximum of all 0 < m < n for which n == a(m) (mod m).

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	1
5	4
6	1
7	6
8	3
9	5
10	1
11	10
12	1
13	12
14	9
15	2
16	1
17	16
18	1
19	18
20	7
21	11
22	1
23	22
24	5
25	13
26	3
27	20
28	1
29	28
30	1
31	30
32	21
33	17
34	7
35	8
36	1
37	36
38	25
39	5
40	1
41	40
42	1
43	42
44	39
45	23
46	1
47	46
48	7
49	16
50	33
51	14
52	1
53	52
54	11
55	48
56	19
57	29
58	1
59	58
60	1
61	60
62	15
63	38
64	13
65	54
66	1
67	66
68	45
69	7
70	1
71	70
72	1
73	72
74	27

n	a(n)
1	0
2	1
3	2
4	1
5	4
6	1
7	6
8	3
9	5
10	1
11	10
12	1
13	12
14	9
15	2
16	1
17	16
18	1
19	18
20	7
21	11
22	1
23	22
24	5
25	13
26	3
27	20
28	1
29	28
30	1
31	30
32	21
33	17
34	7
35	8
36	1
37	36
38	25
39	5
40	1
41	40
42	1
43	42
44	39
45	23
46	1
47	46
48	7
49	16
50	33
51	14
52	1
53	52
54	11
55	48
56	19
57	29
58	1
59	58
60	1
61	60
62	15
63	38
64	13
65	54
66	1
67	66
68	45
69	7
70	1
71	70
72	1
73	72
74	27

n	a(n)
1	0
2	1
3	2
4	1
5	4
6	1
7	6
8	3
9	5
10	1
11	10
12	1
13	12
14	9
15	2
16	1
17	16
18	1
19	18
20	7
21	11
22	1
23	22
24	5
25	13
26	3
27	20
28	1
29	28
30	1
31	30
32	21
33	17
34	7
35	8
36	1
37	36
38	25
39	5
40	1
41	40
42	1
43	42
44	39
45	23
46	1
47	46
48	7
49	16
50	33
51	14
52	1
53	52
54	11
55	48
56	19
57	29
58	1
59	58
60	1
61	60
62	15
63	38
64	13
65	54
66	1
67	66
68	45
69	7
70	1
71	70
72	1
73	72
74	27