A182665 - cp's OEIS frontend

A182665 Greatest x < n such that n divides x*(x-1).

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	1
10	6
11	1
12	9
13	1
14	8
15	10
16	1
17	1
18	10
19	1
20	16
21	15
22	12
23	1
24	16
25	1
26	14
27	1
28	21
29	1
30	25
31	1
32	1
33	22
34	18
35	21
36	28
37	1
38	20
39	27
40	25
41	1
42	36
43	1
44	33
45	36
46	24
47	1
48	33
49	1
50	26
51	34
52	40
53	1
54	28
55	45
56	49
57	39
58	30
59	1
60	45
61	1
62	32
63	36
64	1
65	40
66	55
67	1
68	52
69	46
70	56
71	1
72	64
73	1
74	38
75	51
76	57
77	56
78	66
79	1
80	65
81	1
82	42
83	1
84	64
85	51
86	44
87	58
88	56
89	1
90	81
91	78
92	69
93	63
94	48
95	76
96	64
97	1
98	50
99	55

[0, 1, 1, 1, 1, 4, 1, 1, 1, 6, 1, 9, 1, 8, 10, 1, 1, 10, 1, 16, 15, 12, 1, 16, 1, 14, 1, 21, 1, 25, 1, 1, 22, 18, 21, 28, 1, 20, 27, 25, 1, 36, 1, 33, 36, 24, 1, 33, 1, 26, 34, 40, 1, 28, 45, 49, 39, 30, 1, 45, 1, 32, 36, 1, 40, 55, 1, 52, 46, 56, 1, 64, 1, 38, 51, 57, 56, 66, 1, 65, 1, 42, 1, 64, 51, 44, 58, 56, 1, 81, 78, 69, 63, 48, 76, 64, 1, 50, 55]

cp's OEIS Frontend

A182665 Greatest x < n such that n divides x*(x-1).

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	1
10	6
11	1
12	9
13	1
14	8
15	10
16	1
17	1
18	10
19	1
20	16
21	15
22	12
23	1
24	16
25	1
26	14
27	1
28	21
29	1
30	25
31	1
32	1
33	22
34	18
35	21
36	28
37	1
38	20
39	27
40	25
41	1
42	36
43	1
44	33
45	36
46	24
47	1
48	33
49	1
50	26
51	34
52	40
53	1
54	28
55	45
56	49
57	39
58	30
59	1
60	45
61	1
62	32
63	36
64	1
65	40
66	55
67	1
68	52
69	46
70	56
71	1
72	64
73	1
74	38
75	51
76	57
77	56
78	66
79	1
80	65
81	1
82	42
83	1
84	64
85	51
86	44
87	58
88	56
89	1
90	81
91	78
92	69
93	63
94	48
95	76
96	64
97	1
98	50
99	55

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	1
10	6
11	1
12	9
13	1
14	8
15	10
16	1
17	1
18	10
19	1
20	16
21	15
22	12
23	1
24	16
25	1
26	14
27	1
28	21
29	1
30	25
31	1
32	1
33	22
34	18
35	21
36	28
37	1
38	20
39	27
40	25
41	1
42	36
43	1
44	33
45	36
46	24
47	1
48	33
49	1
50	26
51	34
52	40
53	1
54	28
55	45
56	49
57	39
58	30
59	1
60	45
61	1
62	32
63	36
64	1
65	40
66	55
67	1
68	52
69	46
70	56
71	1
72	64
73	1
74	38
75	51
76	57
77	56
78	66
79	1
80	65
81	1
82	42
83	1
84	64
85	51
86	44
87	58
88	56
89	1
90	81
91	78
92	69
93	63
94	48
95	76
96	64
97	1
98	50
99	55

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	1
10	6
11	1
12	9
13	1
14	8
15	10
16	1
17	1
18	10
19	1
20	16
21	15
22	12
23	1
24	16
25	1
26	14
27	1
28	21
29	1
30	25
31	1
32	1
33	22
34	18
35	21
36	28
37	1
38	20
39	27
40	25
41	1
42	36
43	1
44	33
45	36
46	24
47	1
48	33
49	1
50	26
51	34
52	40
53	1
54	28
55	45
56	49
57	39
58	30
59	1
60	45
61	1
62	32
63	36
64	1
65	40
66	55
67	1
68	52
69	46
70	56
71	1
72	64
73	1
74	38
75	51
76	57
77	56
78	66
79	1
80	65
81	1
82	42
83	1
84	64
85	51
86	44
87	58
88	56
89	1
90	81
91	78
92	69
93	63
94	48
95	76
96	64
97	1
98	50
99	55