A138369 - cp's OEIS frontend

A138369 Count of post-period decimal digits up to which the rounded n-th convergent to 4sin(4Pi/5) agrees with the exact value.

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

[0, 2, 2, 3, 4, 4, 6, 6, 7, 8, 10, 12, 13, 14, 14, 16, 17, 18, 19, 19, 23, 25, 26, 28, 27, 29, 31, 31, 33, 35, 37, 38, 38, 39, 40, 41, 41, 42, 42, 45, 45, 48, 50, 51, 51, 52, 54, 54, 55, 56, 57, 57, 61, 65, 66, 67, 68, 69, 70, 71, 71, 72, 73, 72, 75, 75, 76, 77, 77, 78, 79, 80, 81, 81, 83]

cp's OEIS Frontend

A138369 Count of post-period decimal digits up to which the rounded n-th convergent to 4sin(4Pi/5) agrees with the exact value.

Table of values

List of values

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

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

cp's OEIS Frontend

A138369 Count of post-period decimal digits up to which the rounded n-th convergent to 4*sin(4*Pi/5) agrees with the exact value.

Table of values

List of values

A138369 Count of post-period decimal digits up to which the rounded n-th convergent to 4sin(4Pi/5) agrees with the exact value.

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