A070442 - cp's OEIS frontend

A070442 a(n) = n^2 mod 20.

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

[0, 1, 4, 9, 16, 5, 16, 9, 4, 1, 0, 1, 4, 9, 16, 5, 16, 9, 4, 1, 0, 1, 4, 9, 16, 5, 16, 9, 4, 1, 0, 1, 4, 9, 16, 5, 16, 9, 4, 1, 0, 1, 4, 9, 16, 5, 16, 9, 4, 1, 0, 1, 4, 9, 16, 5, 16, 9, 4, 1, 0, 1, 4, 9, 16, 5, 16, 9, 4, 1, 0, 1, 4, 9, 16, 5, 16, 9, 4, 1, 0, 1, 4, 9, 16, 5, 16, 9, 4, 1, 0, 1, 4, 9, 16]

cp's OEIS Frontend

A070442 a(n) = n^2 mod 20.

Table of values

List of values

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

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

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