A063717 - cp's OEIS frontend

A063717 a(n) is the greatest divisor of n^2 that is less than n.

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

[1, 1, 2, 1, 4, 1, 4, 3, 5, 1, 9, 1, 7, 9, 8, 1, 12, 1, 16, 9, 11, 1, 18, 5, 13, 9, 16, 1, 25, 1, 16, 11, 17, 25, 27, 1, 19, 13, 32, 1, 36, 1, 22, 27, 23, 1, 36, 7, 25, 17, 26, 1, 36, 25, 49, 19, 29, 1, 50, 1, 31, 49, 32, 25, 44, 1, 34, 23, 50, 1, 64, 1, 37, 45, 38, 49, 52, 1, 64, 27, 41]

cp's OEIS Frontend

A063717 a(n) is the greatest divisor of n^2 that is less than n.

Table of values

List of values

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

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

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