A155816 - cp's OEIS frontend

A155816 First nonzero digit in the decimal expansion of (cos Pi/4)^n.

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

[7, 5, 3, 2, 1, 1, 8, 6, 4, 3, 2, 1, 1, 7, 5, 3, 2, 1, 1, 9, 6, 4, 3, 2, 1, 1, 8, 6, 4, 3, 2, 1, 1, 7, 5, 3, 2, 1, 1, 9, 6, 4, 3, 2, 1, 1, 8, 5, 4, 2, 2, 1, 1, 7, 5, 3, 2, 1, 1, 9, 6, 4, 3, 2, 1, 1, 8, 5, 4, 2, 2, 1, 1, 7, 5, 3, 2, 1, 1, 9, 6, 4, 3, 2, 1, 1]

cp's OEIS Frontend

A155816 First nonzero digit in the decimal expansion of (cos Pi/4)^n.

Table of values

List of values

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

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

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