A226518 - cp's OEIS frontend

A226518 Irregular triangle read by rows: T(n,k) = Sum_{i=0..k} Legendre(i,prime(n)).

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

[0, 1, 0, 1, 0, 0, 1, 0, -1, 0, 0, 1, 2, 1, 2, 1, 0, 0, 1, 0, 1, 2, 3, 2, 1, 0, 1, 0, 0, 1, 0, 1, 2, 1, 0, -1, -2, -1, 0, -1, 0, 0, 1, 2, 1, 2, 1, 0, -1, 0, 1, 0, -1, -2, -1, -2, -1, 0, 0, 1, 0, -1, 0, 1, 2, 3, 2, 3, 2, 3, 2, 1, 0, -1, 0, 1, 0, 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

A226518 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	0
2	1
3	0
4	1
5	0
6	0
7	1
8	0
9	-1
10	0
11	0
12	1
13	2
14	1
15	2
16	1
17	0
18	0
19	1
20	0
21	1
22	2
23	3
24	2
25	1
26	0
27	1
28	0
29	0
30	1
31	0
32	1
33	2
34	1
35	0
36	-1
37	-2
38	-1
39	0
40	-1
41	0
42	0
43	1
44	2
45	1
46	2
47	1
48	0
49	-1
50	0
51	1
52	0
53	-1
54	-2
55	-1
56	-2
57	-1
58	0
59	0
60	1
61	0
62	-1
63	0
64	1
65	2
66	3
67	2
68	3
69	2
70	3
71	2
72	1
73	0
74	-1
75	0
76	1
77	0
78	0
79	1
80	2
81	3
82	4
83	3
84	4
85	3
86	4
87	5
88	4
89	3
90	4
91	5
92	4
93	3
94	4
95	3
96	4
97	3
98	2
99	1
100	0

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

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