A071933 - cp's OEIS frontend

A071933 a(n) = Sum_{i=1..n} K(i,i+1), where K(x,y) is the Kronecker symbol (x/y).

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

[1, 0, 1, 2, 3, 2, 3, 4, 5, 4, 3, 4, 5, 4, 5, 6, 7, 6, 7, 8, 9, 8, 7, 8, 9, 8, 7, 8, 9, 8, 9, 10, 11, 10, 11, 12, 13, 12, 13, 14, 15, 14, 13, 14, 15, 14, 13, 14, 15, 14, 15, 16, 17, 16, 15, 16, 17, 16, 15, 16, 17, 16, 17, 18, 19, 18, 19, 20, 21, 20, 21, 22, 23, 22, 21, 22, 23, 22, 23]

cp's OEIS Frontend

A071933 a(n) = Sum_{i=1..n} K(i,i+1), where K(x,y) is the Kronecker symbol (x/y).

Table of values

List of values

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

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

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