A226519 - cp's OEIS frontend

A226519 Irregular triangle read by rows: T(n,k) = Sum_{i=0..k} Legendre(i,prime(n)).

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

[1, 1, 0, 1, 0, -1, 0, 1, 2, 1, 2, 1, 0, 1, 0, 1, 2, 3, 2, 1, 0, 1, 0, 1, 0, 1, 2, 1, 0, -1, -2, -1, 0, -1, 0, 1, 2, 1, 2, 1, 0, -1, 0, 1, 0, -1, -2, -1, -2, -1, 0, 1, 0, -1, 0, 1, 2, 3, 2, 3, 2, 3, 2, 1, 0, -1, 0, 1, 0, 1, 2, 3, 4, 3, 4, 3, 4, 5, 4, 3, 4, 5, 4, 3, 4, 3, 4, 3, 2, 1, 0]

cp's OEIS Frontend

A226519 Irregular triangle read by rows: T(n,k) = Sum_{i=0..k} Legendre(i,prime(n)).

Table of values

List of values

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

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

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