A063962 - cp's OEIS frontend

A063962 Number of distinct prime divisors of n that are <= sqrt(n).

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

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

cp's OEIS Frontend

A063962 Number of distinct prime divisors of n that are <= sqrt(n).

Table of values

List of values

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

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

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