A317936 - cp's OEIS frontend

A317936 Numerators of sequence whose Dirichlet convolution with itself yields A100995 + A063524, that is, the characteristic function of A000961 (prime powers).

n	a(n)
1	1
2	1
3	1
4	7
5	1
6	-1
7	1
8	17
9	7
10	-1
11	1
12	-5
13	1
14	-1
15	-1
16	139
17	1
18	-5
19	1
20	-5
21	-1
22	-1
23	1
24	-5
25	7
26	-1
27	17
28	-5
29	1
30	3
31	1
32	263
33	-1
34	-1
35	-1
36	-31
37	1
38	-1
39	-1
40	-5
41	1
42	3
43	1
44	-5
45	-5
46	-1
47	1
48	19
49	7
50	-5
51	-1
52	-5
53	1
54	-5
55	-1
56	-5
57	-1
58	-1
59	1
60	9
61	1
62	-1
63	-5
64	995
65	-1
66	3
67	1
68	-5
69	-1
70	3
71	1
72	-53
73	1
74	-1
75	-5
76	-5
77	-1
78	3
79	1
80	19
81	139
82	-1
83	1
84	9
85	-1
86	-1
87	-1
88	-5
89	1
90	9

[1, 1, 1, 7, 1, -1, 1, 17, 7, -1, 1, -5, 1, -1, -1, 139, 1, -5, 1, -5, -1, -1, 1, -5, 7, -1, 17, -5, 1, 3, 1, 263, -1, -1, -1, -31, 1, -1, -1, -5, 1, 3, 1, -5, -5, -1, 1, 19, 7, -5, -1, -5, 1, -5, -1, -5, -1, -1, 1, 9, 1, -1, -5, 995, -1, 3, 1, -5, -1, 3, 1, -53, 1, -1, -5, -5, -1, 3, 1, 19, 139, -1, 1, 9, -1, -1, -1, -5, 1, 9]

cp's OEIS Frontend

A317936 Numerators of sequence whose Dirichlet convolution with itself yields A100995 + A063524, that is, the characteristic function of A000961 (prime powers).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	7
5	1
6	-1
7	1
8	17
9	7
10	-1
11	1
12	-5
13	1
14	-1
15	-1
16	139
17	1
18	-5
19	1
20	-5
21	-1
22	-1
23	1
24	-5
25	7
26	-1
27	17
28	-5
29	1
30	3
31	1
32	263
33	-1
34	-1
35	-1
36	-31
37	1
38	-1
39	-1
40	-5
41	1
42	3
43	1
44	-5
45	-5
46	-1
47	1
48	19
49	7
50	-5
51	-1
52	-5
53	1
54	-5
55	-1
56	-5
57	-1
58	-1
59	1
60	9
61	1
62	-1
63	-5
64	995
65	-1
66	3
67	1
68	-5
69	-1
70	3
71	1
72	-53
73	1
74	-1
75	-5
76	-5
77	-1
78	3
79	1
80	19
81	139
82	-1
83	1
84	9
85	-1
86	-1
87	-1
88	-5
89	1
90	9

n	a(n)
1	1
2	1
3	1
4	7
5	1
6	-1
7	1
8	17
9	7
10	-1
11	1
12	-5
13	1
14	-1
15	-1
16	139
17	1
18	-5
19	1
20	-5
21	-1
22	-1
23	1
24	-5
25	7
26	-1
27	17
28	-5
29	1
30	3
31	1
32	263
33	-1
34	-1
35	-1
36	-31
37	1
38	-1
39	-1
40	-5
41	1
42	3
43	1
44	-5
45	-5
46	-1
47	1
48	19
49	7
50	-5
51	-1
52	-5
53	1
54	-5
55	-1
56	-5
57	-1
58	-1
59	1
60	9
61	1
62	-1
63	-5
64	995
65	-1
66	3
67	1
68	-5
69	-1
70	3
71	1
72	-53
73	1
74	-1
75	-5
76	-5
77	-1
78	3
79	1
80	19
81	139
82	-1
83	1
84	9
85	-1
86	-1
87	-1
88	-5
89	1
90	9

n	a(n)
1	1
2	1
3	1
4	7
5	1
6	-1
7	1
8	17
9	7
10	-1
11	1
12	-5
13	1
14	-1
15	-1
16	139
17	1
18	-5
19	1
20	-5
21	-1
22	-1
23	1
24	-5
25	7
26	-1
27	17
28	-5
29	1
30	3
31	1
32	263
33	-1
34	-1
35	-1
36	-31
37	1
38	-1
39	-1
40	-5
41	1
42	3
43	1
44	-5
45	-5
46	-1
47	1
48	19
49	7
50	-5
51	-1
52	-5
53	1
54	-5
55	-1
56	-5
57	-1
58	-1
59	1
60	9
61	1
62	-1
63	-5
64	995
65	-1
66	3
67	1
68	-5
69	-1
70	3
71	1
72	-53
73	1
74	-1
75	-5
76	-5
77	-1
78	3
79	1
80	19
81	139
82	-1
83	1
84	9
85	-1
86	-1
87	-1
88	-5
89	1
90	9