A378452 - cp's OEIS frontend

A378452 Dirichlet inverse of A007875, where A007875(n) = phi(2^omega(n)).

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

[1, -1, -1, 0, -1, 0, -1, 0, 0, 0, -1, 1, -1, 0, 0, 0, -1, 1, -1, 1, 0, 0, -1, 0, 0, 0, 0, 1, -1, 2, -1, 0, 0, 0, 0, 0, -1, 0, 0, 0, -1, 2, -1, 1, 1, 0, -1, 0, 0, 1, 0, 1, -1, 0, 0, 0, 0, 0, -1, 0, -1, 0, 1, 0, 0, 2, -1, 1, 0, 2, -1, -1, -1, 0, 1, 1, 0, 2, -1, 0, 0, 0, -1, 0, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, -1, 1, 1, 0]

cp's OEIS Frontend

A378452 Dirichlet inverse of A007875, where A007875(n) = phi(2^omega(n)).

Table of values

List of values

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

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

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