A035172 - cp's OEIS frontend

A035172 a(n) = Sum_{d|n} Kronecker(-18, d).

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

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

cp's OEIS Frontend

A035172 a(n) = Sum_{d|n} Kronecker(-18, d).

Table of values

List of values

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

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

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