A070443 - cp's OEIS frontend

A070443 a(n) = n^2 mod 21.

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

[0, 1, 4, 9, 16, 4, 15, 7, 1, 18, 16, 16, 18, 1, 7, 15, 4, 16, 9, 4, 1, 0, 1, 4, 9, 16, 4, 15, 7, 1, 18, 16, 16, 18, 1, 7, 15, 4, 16, 9, 4, 1, 0, 1, 4, 9, 16, 4, 15, 7, 1, 18, 16, 16, 18, 1, 7, 15, 4, 16, 9, 4, 1, 0, 1, 4, 9, 16, 4, 15, 7, 1, 18, 16, 16, 18, 1, 7, 15, 4, 16, 9, 4, 1, 0, 1, 4, 9]

cp's OEIS Frontend

A070443 a(n) = n^2 mod 21.

Table of values

List of values

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

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

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