A373968 - cp's OEIS frontend

A373968 a(n) is the number of divisors of n that are Duffinian numbers (A003624).

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	0
8	2
9	1
10	0
11	0
12	1
13	0
14	0
15	0
16	3
17	0
18	1
19	0
20	1
21	1
22	0
23	0
24	2
25	1
26	0
27	2
28	1
29	0
30	0
31	0
32	4
33	0
34	0
35	1
36	3
37	0
38	0
39	1
40	2
41	0
42	1
43	0
44	1
45	1
46	0
47	0
48	3
49	1
50	2
51	0
52	1
53	0
54	2
55	1
56	2
57	1
58	0
59	0
60	1
61	0
62	0
63	3
64	5
65	1
66	0
67	0
68	1
69	0
70	1
71	0
72	4
73	0
74	0
75	2
76	1
77	1
78	1
79	0
80	3
81	3
82	0
83	0
84	2
85	1
86	0
87	0
88	2

[0, 0, 0, 1, 0, 0, 0, 2, 1, 0, 0, 1, 0, 0, 0, 3, 0, 1, 0, 1, 1, 0, 0, 2, 1, 0, 2, 1, 0, 0, 0, 4, 0, 0, 1, 3, 0, 0, 1, 2, 0, 1, 0, 1, 1, 0, 0, 3, 1, 2, 0, 1, 0, 2, 1, 2, 1, 0, 0, 1, 0, 0, 3, 5, 1, 0, 0, 1, 0, 1, 0, 4, 0, 0, 2, 1, 1, 1, 0, 3, 3, 0, 0, 2, 1, 0, 0, 2]

cp's OEIS Frontend

A373968 a(n) is the number of divisors of n that are Duffinian numbers (A003624).

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	0
8	2
9	1
10	0
11	0
12	1
13	0
14	0
15	0
16	3
17	0
18	1
19	0
20	1
21	1
22	0
23	0
24	2
25	1
26	0
27	2
28	1
29	0
30	0
31	0
32	4
33	0
34	0
35	1
36	3
37	0
38	0
39	1
40	2
41	0
42	1
43	0
44	1
45	1
46	0
47	0
48	3
49	1
50	2
51	0
52	1
53	0
54	2
55	1
56	2
57	1
58	0
59	0
60	1
61	0
62	0
63	3
64	5
65	1
66	0
67	0
68	1
69	0
70	1
71	0
72	4
73	0
74	0
75	2
76	1
77	1
78	1
79	0
80	3
81	3
82	0
83	0
84	2
85	1
86	0
87	0
88	2

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	0
8	2
9	1
10	0
11	0
12	1
13	0
14	0
15	0
16	3
17	0
18	1
19	0
20	1
21	1
22	0
23	0
24	2
25	1
26	0
27	2
28	1
29	0
30	0
31	0
32	4
33	0
34	0
35	1
36	3
37	0
38	0
39	1
40	2
41	0
42	1
43	0
44	1
45	1
46	0
47	0
48	3
49	1
50	2
51	0
52	1
53	0
54	2
55	1
56	2
57	1
58	0
59	0
60	1
61	0
62	0
63	3
64	5
65	1
66	0
67	0
68	1
69	0
70	1
71	0
72	4
73	0
74	0
75	2
76	1
77	1
78	1
79	0
80	3
81	3
82	0
83	0
84	2
85	1
86	0
87	0
88	2

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	0
8	2
9	1
10	0
11	0
12	1
13	0
14	0
15	0
16	3
17	0
18	1
19	0
20	1
21	1
22	0
23	0
24	2
25	1
26	0
27	2
28	1
29	0
30	0
31	0
32	4
33	0
34	0
35	1
36	3
37	0
38	0
39	1
40	2
41	0
42	1
43	0
44	1
45	1
46	0
47	0
48	3
49	1
50	2
51	0
52	1
53	0
54	2
55	1
56	2
57	1
58	0
59	0
60	1
61	0
62	0
63	3
64	5
65	1
66	0
67	0
68	1
69	0
70	1
71	0
72	4
73	0
74	0
75	2
76	1
77	1
78	1
79	0
80	3
81	3
82	0
83	0
84	2
85	1
86	0
87	0
88	2