A360616 - cp's OEIS frontend

A360616 Half the number of prime factors of n (counted with multiplicity, A001222), rounded down.

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

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

cp's OEIS Frontend

A360616 Half the number of prime factors of n (counted with multiplicity, A001222), rounded down.

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

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

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