A070154 - cp's OEIS frontend

A070154 Number of terms in the simple continued fraction expansion of Sum_{k=0..n}(-1)^k/(2k+1), the Leibniz-Gregory series for Pi/4.

n	a(n)
0	1
1	3
2	4
3	9
4	5
5	9
6	14
7	10
8	10
9	19
10	16
11	21
12	22
13	22
14	24
15	20
16	19
17	24
18	28
19	28
20	29
21	30
22	39
23	31
24	44
25	40
26	44
27	33
28	41
29	47
30	44
31	48
32	54
33	48
34	60
35	49
36	63
37	51
38	65
39	72
40	64
41	70
42	78
43	64
44	79
45	77
46	74
47	87
48	75
49	86
50	82
51	94
52	88
53	106
54	106
55	94
56	104
57	108
58	87
59	107
60	86
61	106
62	98
63	110
64	115
65	110
66	105
67	115

[1, 3, 4, 9, 5, 9, 14, 10, 10, 19, 16, 21, 22, 22, 24, 20, 19, 24, 28, 28, 29, 30, 39, 31, 44, 40, 44, 33, 41, 47, 44, 48, 54, 48, 60, 49, 63, 51, 65, 72, 64, 70, 78, 64, 79, 77, 74, 87, 75, 86, 82, 94, 88, 106, 106, 94, 104, 108, 87, 107, 86, 106, 98, 110, 115, 110, 105, 115]

cp's OEIS Frontend

A070154 Number of terms in the simple continued fraction expansion of Sum_{k=0..n}(-1)^k/(2k+1), the Leibniz-Gregory series for Pi/4.

Table of values

List of values

n	a(n)
0	1
1	3
2	4
3	9
4	5
5	9
6	14
7	10
8	10
9	19
10	16
11	21
12	22
13	22
14	24
15	20
16	19
17	24
18	28
19	28
20	29
21	30
22	39
23	31
24	44
25	40
26	44
27	33
28	41
29	47
30	44
31	48
32	54
33	48
34	60
35	49
36	63
37	51
38	65
39	72
40	64
41	70
42	78
43	64
44	79
45	77
46	74
47	87
48	75
49	86
50	82
51	94
52	88
53	106
54	106
55	94
56	104
57	108
58	87
59	107
60	86
61	106
62	98
63	110
64	115
65	110
66	105
67	115

n	a(n)
0	1
1	3
2	4
3	9
4	5
5	9
6	14
7	10
8	10
9	19
10	16
11	21
12	22
13	22
14	24
15	20
16	19
17	24
18	28
19	28
20	29
21	30
22	39
23	31
24	44
25	40
26	44
27	33
28	41
29	47
30	44
31	48
32	54
33	48
34	60
35	49
36	63
37	51
38	65
39	72
40	64
41	70
42	78
43	64
44	79
45	77
46	74
47	87
48	75
49	86
50	82
51	94
52	88
53	106
54	106
55	94
56	104
57	108
58	87
59	107
60	86
61	106
62	98
63	110
64	115
65	110
66	105
67	115

n	a(n)
0	1
1	3
2	4
3	9
4	5
5	9
6	14
7	10
8	10
9	19
10	16
11	21
12	22
13	22
14	24
15	20
16	19
17	24
18	28
19	28
20	29
21	30
22	39
23	31
24	44
25	40
26	44
27	33
28	41
29	47
30	44
31	48
32	54
33	48
34	60
35	49
36	63
37	51
38	65
39	72
40	64
41	70
42	78
43	64
44	79
45	77
46	74
47	87
48	75
49	86
50	82
51	94
52	88
53	106
54	106
55	94
56	104
57	108
58	87
59	107
60	86
61	106
62	98
63	110
64	115
65	110
66	105
67	115