A188581 - cp's OEIS frontend

A188581 Inverse Moebius transform of A000688, the number of factorizations of n into prime powers greater than 1.

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

[1, 2, 2, 4, 2, 4, 2, 7, 4, 4, 2, 8, 2, 4, 4, 12, 2, 8, 2, 8, 4, 4, 2, 14, 4, 4, 7, 8, 2, 8, 2, 19, 4, 4, 4, 16, 2, 4, 4, 14, 2, 8, 2, 8, 8, 4, 2, 24, 4, 8, 4, 8, 2, 14, 4, 14, 4, 4, 2, 16, 2, 4, 8, 30, 4, 8, 2, 8, 4, 8, 2, 28, 2, 4, 8, 8, 4, 8, 2, 24, 12, 4, 2, 16, 4, 4, 4, 14, 2, 16]

cp's OEIS Frontend

A188581 Inverse Moebius transform of A000688, the number of factorizations of n into prime powers greater than 1.

Table of values

List of values

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

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

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