A091395 - cp's OEIS frontend

A091395 a(n) = Product_{ p | n } (1 + Legendre(-7,p) ).

n	a(n)
1	1
2	2
3	0
4	2
5	0
6	0
7	1
8	2
9	0
10	0
11	2
12	0
13	0
14	2
15	0
16	2
17	0
18	0
19	0
20	0
21	0
22	4
23	2
24	0
25	0
26	0
27	0
28	2
29	2
30	0
31	0
32	2
33	0
34	0
35	0
36	0
37	2
38	0
39	0
40	0
41	0
42	0
43	2
44	4
45	0
46	4
47	0
48	0
49	1
50	0
51	0
52	0
53	2
54	0
55	0
56	2
57	0
58	4
59	0
60	0
61	0
62	0
63	0
64	2
65	0
66	0
67	2
68	0
69	0
70	0
71	2
72	0
73	0
74	4
75	0
76	0
77	2
78	0
79	2
80	0
81	0
82	0
83	0
84	0
85	0
86	4
87	0
88	4
89	0
90	0
91	0
92	4
93	0
94	0
95	0
96	0
97	0
98	2
99	0
100	0
101	0
102	0
103	0
104	0
105	0

[1, 2, 0, 2, 0, 0, 1, 2, 0, 0, 2, 0, 0, 2, 0, 2, 0, 0, 0, 0, 0, 4, 2, 0, 0, 0, 0, 2, 2, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 2, 4, 0, 4, 0, 0, 1, 0, 0, 0, 2, 0, 0, 2, 0, 4, 0, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 0, 2, 0, 0, 4, 0, 0, 2, 0, 2, 0, 0, 0, 0, 0, 0, 4, 0, 4, 0, 0, 0, 4, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0]

cp's OEIS Frontend

A091395 a(n) = Product_{ p | n } (1 + Legendre(-7,p) ).

Table of values

List of values

n	a(n)
1	1
2	2
3	0
4	2
5	0
6	0
7	1
8	2
9	0
10	0
11	2
12	0
13	0
14	2
15	0
16	2
17	0
18	0
19	0
20	0
21	0
22	4
23	2
24	0
25	0
26	0
27	0
28	2
29	2
30	0
31	0
32	2
33	0
34	0
35	0
36	0
37	2
38	0
39	0
40	0
41	0
42	0
43	2
44	4
45	0
46	4
47	0
48	0
49	1
50	0
51	0
52	0
53	2
54	0
55	0
56	2
57	0
58	4
59	0
60	0
61	0
62	0
63	0
64	2
65	0
66	0
67	2
68	0
69	0
70	0
71	2
72	0
73	0
74	4
75	0
76	0
77	2
78	0
79	2
80	0
81	0
82	0
83	0
84	0
85	0
86	4
87	0
88	4
89	0
90	0
91	0
92	4
93	0
94	0
95	0
96	0
97	0
98	2
99	0
100	0
101	0
102	0
103	0
104	0
105	0

n	a(n)
1	1
2	2
3	0
4	2
5	0
6	0
7	1
8	2
9	0
10	0
11	2
12	0
13	0
14	2
15	0
16	2
17	0
18	0
19	0
20	0
21	0
22	4
23	2
24	0
25	0
26	0
27	0
28	2
29	2
30	0
31	0
32	2
33	0
34	0
35	0
36	0
37	2
38	0
39	0
40	0
41	0
42	0
43	2
44	4
45	0
46	4
47	0
48	0
49	1
50	0
51	0
52	0
53	2
54	0
55	0
56	2
57	0
58	4
59	0
60	0
61	0
62	0
63	0
64	2
65	0
66	0
67	2
68	0
69	0
70	0
71	2
72	0
73	0
74	4
75	0
76	0
77	2
78	0
79	2
80	0
81	0
82	0
83	0
84	0
85	0
86	4
87	0
88	4
89	0
90	0
91	0
92	4
93	0
94	0
95	0
96	0
97	0
98	2
99	0
100	0
101	0
102	0
103	0
104	0
105	0

n	a(n)
1	1
2	2
3	0
4	2
5	0
6	0
7	1
8	2
9	0
10	0
11	2
12	0
13	0
14	2
15	0
16	2
17	0
18	0
19	0
20	0
21	0
22	4
23	2
24	0
25	0
26	0
27	0
28	2
29	2
30	0
31	0
32	2
33	0
34	0
35	0
36	0
37	2
38	0
39	0
40	0
41	0
42	0
43	2
44	4
45	0
46	4
47	0
48	0
49	1
50	0
51	0
52	0
53	2
54	0
55	0
56	2
57	0
58	4
59	0
60	0
61	0
62	0
63	0
64	2
65	0
66	0
67	2
68	0
69	0
70	0
71	2
72	0
73	0
74	4
75	0
76	0
77	2
78	0
79	2
80	0
81	0
82	0
83	0
84	0
85	0
86	4
87	0
88	4
89	0
90	0
91	0
92	4
93	0
94	0
95	0
96	0
97	0
98	2
99	0
100	0
101	0
102	0
103	0
104	0
105	0