A056169 - cp's OEIS frontend

A056169 Number of unitary prime divisors of n.

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

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

cp's OEIS Frontend

A056169 Number of unitary prime divisors of n.

Table of values

List of values

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

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

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