A369974 - cp's OEIS frontend

A369974 Dirichlet inverse of A369001, where A369001(n) = 1 if n' / gcd(n,n') is even, otherwise 0, and n' stands for the arithmetic derivative of n, A003415.

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

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

cp's OEIS Frontend

A369974 Dirichlet inverse of A369001, where A369001(n) = 1 if n' / gcd(n,n') is even, otherwise 0, and n' stands for the arithmetic derivative of n, A003415.

Table of values

List of values

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

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

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