A063987 - cp's OEIS frontend

A063987 Irregular triangle in which n-th row gives quadratic residues modulo the n-th prime.

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

[1, 1, 1, 4, 1, 2, 4, 1, 3, 4, 5, 9, 1, 3, 4, 9, 10, 12, 1, 2, 4, 8, 9, 13, 15, 16, 1, 4, 5, 6, 7, 9, 11, 16, 17, 1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 1, 4, 5, 6, 7, 9, 13, 16, 20, 22, 23, 24, 25, 28, 1, 2, 4, 5, 7, 8, 9, 10, 14, 16, 18, 19, 20, 25, 28, 1, 3, 4, 7, 9, 10, 11, 12, 16, 21, 25]

cp's OEIS Frontend

A063987 Irregular triangle in which n-th row gives quadratic residues modulo the n-th prime.

Table of values

List of values

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

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

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