A169611 - cp's OEIS frontend

A169611 Number of prime divisors of n that are not greater than 3, counted with multiplicity.

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

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

cp's OEIS Frontend

A169611 Number of prime divisors of n that are not greater than 3, counted with multiplicity.

Table of values

List of values

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

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

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