A056674 - cp's OEIS frontend

A056674 Number of squarefree divisors which are not unitary. Also number of unitary divisors which are not squarefree.

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	0
8	1
9	1
10	0
11	0
12	2
13	0
14	0
15	0
16	1
17	0
18	2
19	0
20	2
21	0
22	0
23	0
24	2
25	1
26	0
27	1
28	2
29	0
30	0
31	0
32	1
33	0
34	0
35	0
36	3
37	0
38	0
39	0
40	2
41	0
42	0
43	0
44	2
45	2
46	0
47	0
48	2
49	1
50	2
51	0
52	2
53	0
54	2
55	0
56	2
57	0
58	0
59	0
60	4
61	0
62	0
63	2
64	1
65	0
66	0
67	0
68	2
69	0
70	0
71	0
72	3
73	0
74	0
75	2
76	2
77	0
78	0
79	0
80	2
81	1
82	0
83	0
84	4
85	0
86	0
87	0
88	2
89	0
90	4
91	0
92	2
93	0
94	0
95	0
96	2
97	0
98	2
99	2
100	3
101	0
102	0
103	0
104	2
105	0

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

cp's OEIS Frontend

A056674 Number of squarefree divisors which are not unitary. Also number of unitary divisors which are not squarefree.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	0
8	1
9	1
10	0
11	0
12	2
13	0
14	0
15	0
16	1
17	0
18	2
19	0
20	2
21	0
22	0
23	0
24	2
25	1
26	0
27	1
28	2
29	0
30	0
31	0
32	1
33	0
34	0
35	0
36	3
37	0
38	0
39	0
40	2
41	0
42	0
43	0
44	2
45	2
46	0
47	0
48	2
49	1
50	2
51	0
52	2
53	0
54	2
55	0
56	2
57	0
58	0
59	0
60	4
61	0
62	0
63	2
64	1
65	0
66	0
67	0
68	2
69	0
70	0
71	0
72	3
73	0
74	0
75	2
76	2
77	0
78	0
79	0
80	2
81	1
82	0
83	0
84	4
85	0
86	0
87	0
88	2
89	0
90	4
91	0
92	2
93	0
94	0
95	0
96	2
97	0
98	2
99	2
100	3
101	0
102	0
103	0
104	2
105	0

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	0
8	1
9	1
10	0
11	0
12	2
13	0
14	0
15	0
16	1
17	0
18	2
19	0
20	2
21	0
22	0
23	0
24	2
25	1
26	0
27	1
28	2
29	0
30	0
31	0
32	1
33	0
34	0
35	0
36	3
37	0
38	0
39	0
40	2
41	0
42	0
43	0
44	2
45	2
46	0
47	0
48	2
49	1
50	2
51	0
52	2
53	0
54	2
55	0
56	2
57	0
58	0
59	0
60	4
61	0
62	0
63	2
64	1
65	0
66	0
67	0
68	2
69	0
70	0
71	0
72	3
73	0
74	0
75	2
76	2
77	0
78	0
79	0
80	2
81	1
82	0
83	0
84	4
85	0
86	0
87	0
88	2
89	0
90	4
91	0
92	2
93	0
94	0
95	0
96	2
97	0
98	2
99	2
100	3
101	0
102	0
103	0
104	2
105	0

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	0
8	1
9	1
10	0
11	0
12	2
13	0
14	0
15	0
16	1
17	0
18	2
19	0
20	2
21	0
22	0
23	0
24	2
25	1
26	0
27	1
28	2
29	0
30	0
31	0
32	1
33	0
34	0
35	0
36	3
37	0
38	0
39	0
40	2
41	0
42	0
43	0
44	2
45	2
46	0
47	0
48	2
49	1
50	2
51	0
52	2
53	0
54	2
55	0
56	2
57	0
58	0
59	0
60	4
61	0
62	0
63	2
64	1
65	0
66	0
67	0
68	2
69	0
70	0
71	0
72	3
73	0
74	0
75	2
76	2
77	0
78	0
79	0
80	2
81	1
82	0
83	0
84	4
85	0
86	0
87	0
88	2
89	0
90	4
91	0
92	2
93	0
94	0
95	0
96	2
97	0
98	2
99	2
100	3
101	0
102	0
103	0
104	2
105	0