A342917 - cp's OEIS frontend

A342917 a(n) = A001615(n) / gcd(1+n, A001615(n)), where A001615 is Dedekind psi, n * Product_{p|n, p prime} (1 + 1/p).

n	a(n)
1	1
2	1
3	1
4	6
5	1
6	12
7	1
8	4
9	6
10	18
11	1
12	24
13	1
14	8
15	3
16	24
17	1
18	36
19	1
20	12
21	16
22	36
23	1
24	48
25	15
26	14
27	9
28	48
29	1
30	72
31	1
32	16
33	24
34	54
35	4
36	72
37	1
38	20
39	7
40	72
41	1
42	96
43	1
44	8
45	36
46	72
47	1
48	96
49	28
50	30
51	18
52	84
53	1
54	108
55	9
56	32
57	40
58	90
59	1
60	144
61	1
62	32
63	3
64	96
65	14
66	144
67	1
68	36
69	48
70	144
71	1
72	144
73	1
74	38
75	30
76	120
77	16
78	168
79	1
80	16
81	54
82	126
83	1
84	192
85	54
86	44
87	15
88	144

[1, 1, 1, 6, 1, 12, 1, 4, 6, 18, 1, 24, 1, 8, 3, 24, 1, 36, 1, 12, 16, 36, 1, 48, 15, 14, 9, 48, 1, 72, 1, 16, 24, 54, 4, 72, 1, 20, 7, 72, 1, 96, 1, 8, 36, 72, 1, 96, 28, 30, 18, 84, 1, 108, 9, 32, 40, 90, 1, 144, 1, 32, 3, 96, 14, 144, 1, 36, 48, 144, 1, 144, 1, 38, 30, 120, 16, 168, 1, 16, 54, 126, 1, 192, 54, 44, 15, 144]

cp's OEIS Frontend

A342917 a(n) = A001615(n) / gcd(1+n, A001615(n)), where A001615 is Dedekind psi, n * Product_{p|n, p prime} (1 + 1/p).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	6
5	1
6	12
7	1
8	4
9	6
10	18
11	1
12	24
13	1
14	8
15	3
16	24
17	1
18	36
19	1
20	12
21	16
22	36
23	1
24	48
25	15
26	14
27	9
28	48
29	1
30	72
31	1
32	16
33	24
34	54
35	4
36	72
37	1
38	20
39	7
40	72
41	1
42	96
43	1
44	8
45	36
46	72
47	1
48	96
49	28
50	30
51	18
52	84
53	1
54	108
55	9
56	32
57	40
58	90
59	1
60	144
61	1
62	32
63	3
64	96
65	14
66	144
67	1
68	36
69	48
70	144
71	1
72	144
73	1
74	38
75	30
76	120
77	16
78	168
79	1
80	16
81	54
82	126
83	1
84	192
85	54
86	44
87	15
88	144

n	a(n)
1	1
2	1
3	1
4	6
5	1
6	12
7	1
8	4
9	6
10	18
11	1
12	24
13	1
14	8
15	3
16	24
17	1
18	36
19	1
20	12
21	16
22	36
23	1
24	48
25	15
26	14
27	9
28	48
29	1
30	72
31	1
32	16
33	24
34	54
35	4
36	72
37	1
38	20
39	7
40	72
41	1
42	96
43	1
44	8
45	36
46	72
47	1
48	96
49	28
50	30
51	18
52	84
53	1
54	108
55	9
56	32
57	40
58	90
59	1
60	144
61	1
62	32
63	3
64	96
65	14
66	144
67	1
68	36
69	48
70	144
71	1
72	144
73	1
74	38
75	30
76	120
77	16
78	168
79	1
80	16
81	54
82	126
83	1
84	192
85	54
86	44
87	15
88	144

n	a(n)
1	1
2	1
3	1
4	6
5	1
6	12
7	1
8	4
9	6
10	18
11	1
12	24
13	1
14	8
15	3
16	24
17	1
18	36
19	1
20	12
21	16
22	36
23	1
24	48
25	15
26	14
27	9
28	48
29	1
30	72
31	1
32	16
33	24
34	54
35	4
36	72
37	1
38	20
39	7
40	72
41	1
42	96
43	1
44	8
45	36
46	72
47	1
48	96
49	28
50	30
51	18
52	84
53	1
54	108
55	9
56	32
57	40
58	90
59	1
60	144
61	1
62	32
63	3
64	96
65	14
66	144
67	1
68	36
69	48
70	144
71	1
72	144
73	1
74	38
75	30
76	120
77	16
78	168
79	1
80	16
81	54
82	126
83	1
84	192
85	54
86	44
87	15
88	144