A382487 - cp's OEIS frontend

A382487 The number of divisors of n whose largest prime factor is 3.

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

[0, 0, 1, 0, 0, 2, 0, 0, 2, 0, 0, 3, 0, 0, 1, 0, 0, 4, 0, 0, 1, 0, 0, 4, 0, 0, 3, 0, 0, 2, 0, 0, 1, 0, 0, 6, 0, 0, 1, 0, 0, 2, 0, 0, 2, 0, 0, 5, 0, 0, 1, 0, 0, 6, 0, 0, 1, 0, 0, 3, 0, 0, 2, 0, 0, 2, 0, 0, 1, 0, 0, 8, 0, 0, 1, 0, 0, 2, 0, 0, 4, 0, 0, 3, 0, 0, 1]

cp's OEIS Frontend

A382487 The number of divisors of n whose largest prime factor is 3.

Table of values

List of values

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

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

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