A085091 - cp's OEIS frontend

A085091 Denominator of Sum_{i=2..t} (d(i)/d(i-1)-1), where d(1), ..., d(t) are the divisors of n.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	1
12	3
13	1
14	2
15	3
16	1
17	1
18	1
19	1
20	4
21	3
22	2
23	1
24	6
25	1
26	2
27	1
28	4
29	1
30	15
31	1
32	1
33	3
34	2
35	5
36	3
37	1
38	2
39	3
40	10
41	1
42	6
43	1
44	4
45	15
46	2
47	1
48	1
49	1
50	1
51	3
52	4
53	1
54	2
55	5
56	14
57	3
58	2
59	1
60	30
61	1
62	2
63	21
64	1
65	5
66	6
67	1
68	4
69	3
70	35
71	1
72	24
73	1
74	2
75	3
76	4
77	7
78	6
79	1
80	20
81	1
82	2
83	1
84	7
85	5
86	2
87	3
88	8
89	1
90	45
91	7
92	4
93	3
94	2
95	5
96	6
97	1
98	1
99	9
100	2
101	1

[1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 3, 1, 1, 1, 1, 4, 3, 2, 1, 6, 1, 2, 1, 4, 1, 15, 1, 1, 3, 2, 5, 3, 1, 2, 3, 10, 1, 6, 1, 4, 15, 2, 1, 1, 1, 1, 3, 4, 1, 2, 5, 14, 3, 2, 1, 30, 1, 2, 21, 1, 5, 6, 1, 4, 3, 35, 1, 24, 1, 2, 3, 4, 7, 6, 1, 20, 1, 2, 1, 7, 5, 2, 3, 8, 1, 45, 7, 4, 3, 2, 5, 6, 1, 1, 9, 2, 1]

cp's OEIS Frontend

A085091 Denominator of Sum_{i=2..t} (d(i)/d(i-1)-1), where d(1), ..., d(t) are the divisors of n.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	1
12	3
13	1
14	2
15	3
16	1
17	1
18	1
19	1
20	4
21	3
22	2
23	1
24	6
25	1
26	2
27	1
28	4
29	1
30	15
31	1
32	1
33	3
34	2
35	5
36	3
37	1
38	2
39	3
40	10
41	1
42	6
43	1
44	4
45	15
46	2
47	1
48	1
49	1
50	1
51	3
52	4
53	1
54	2
55	5
56	14
57	3
58	2
59	1
60	30
61	1
62	2
63	21
64	1
65	5
66	6
67	1
68	4
69	3
70	35
71	1
72	24
73	1
74	2
75	3
76	4
77	7
78	6
79	1
80	20
81	1
82	2
83	1
84	7
85	5
86	2
87	3
88	8
89	1
90	45
91	7
92	4
93	3
94	2
95	5
96	6
97	1
98	1
99	9
100	2
101	1

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	1
12	3
13	1
14	2
15	3
16	1
17	1
18	1
19	1
20	4
21	3
22	2
23	1
24	6
25	1
26	2
27	1
28	4
29	1
30	15
31	1
32	1
33	3
34	2
35	5
36	3
37	1
38	2
39	3
40	10
41	1
42	6
43	1
44	4
45	15
46	2
47	1
48	1
49	1
50	1
51	3
52	4
53	1
54	2
55	5
56	14
57	3
58	2
59	1
60	30
61	1
62	2
63	21
64	1
65	5
66	6
67	1
68	4
69	3
70	35
71	1
72	24
73	1
74	2
75	3
76	4
77	7
78	6
79	1
80	20
81	1
82	2
83	1
84	7
85	5
86	2
87	3
88	8
89	1
90	45
91	7
92	4
93	3
94	2
95	5
96	6
97	1
98	1
99	9
100	2
101	1

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	1
12	3
13	1
14	2
15	3
16	1
17	1
18	1
19	1
20	4
21	3
22	2
23	1
24	6
25	1
26	2
27	1
28	4
29	1
30	15
31	1
32	1
33	3
34	2
35	5
36	3
37	1
38	2
39	3
40	10
41	1
42	6
43	1
44	4
45	15
46	2
47	1
48	1
49	1
50	1
51	3
52	4
53	1
54	2
55	5
56	14
57	3
58	2
59	1
60	30
61	1
62	2
63	21
64	1
65	5
66	6
67	1
68	4
69	3
70	35
71	1
72	24
73	1
74	2
75	3
76	4
77	7
78	6
79	1
80	20
81	1
82	2
83	1
84	7
85	5
86	2
87	3
88	8
89	1
90	45
91	7
92	4
93	3
94	2
95	5
96	6
97	1
98	1
99	9
100	2
101	1