A051521 - cp's OEIS frontend

A051521 Number of ways to represent n as k/d(k), where d(k) = A000005(k) is the number of divisors of k.

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

[2, 2, 3, 1, 2, 1, 2, 2, 1, 1, 2, 1, 2, 1, 1, 2, 2, 0, 2, 1, 1, 1, 2, 2, 3, 1, 0, 2, 2, 0, 2, 1, 1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 2, 2, 0, 1, 2, 2, 3, 1, 1, 2, 2, 3, 1, 2, 1, 1, 2, 1, 2, 1, 0, 0, 1, 1, 2, 2, 1, 1, 2, 0, 2, 1, 1, 2, 1, 1, 2, 2, 2, 1, 2, 2, 1, 1, 1]

cp's OEIS Frontend

A051521 Number of ways to represent n as k/d(k), where d(k) = A000005(k) is the number of divisors of k.

Table of values

List of values

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

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

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