A345993 - cp's OEIS frontend

A345993 Let m = A344005(n) = smallest m such that n divides m*(m+1); a(n) = gcd(n,m+1).

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

[1, 2, 3, 4, 5, 3, 7, 8, 9, 5, 11, 4, 13, 7, 3, 16, 17, 9, 19, 5, 7, 11, 23, 3, 25, 13, 27, 4, 29, 6, 31, 32, 3, 17, 5, 9, 37, 19, 13, 8, 41, 7, 43, 4, 5, 23, 47, 16, 49, 25, 3, 13, 53, 27, 11, 8, 19, 29, 59, 4, 61, 31, 7, 64, 13, 6, 67, 17, 3, 5, 71, 9, 73, 37, 25, 4, 11, 13, 79]

cp's OEIS Frontend

A345993 Let m = A344005(n) = smallest m such that n divides m*(m+1); a(n) = gcd(n,m+1).

Table of values

List of values

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

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

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