A191761 - cp's OEIS frontend

A191761 Last digit of (2*n)^2. Also period 5: repeat [0, 4, 6, 6, 4].

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

[0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0, 4, 6, 6, 4, 0]

cp's OEIS Frontend

A191761 Last digit of (2*n)^2. Also period 5: repeat [0, 4, 6, 6, 4].

Table of values

List of values

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

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

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