A157142 - cp's OEIS frontend

A157142 Signed denominators of Leibniz series for Pi/4.

n	a(n)
0	1
1	-3
2	5
3	-7
4	9
5	-11
6	13
7	-15
8	17
9	-19
10	21
11	-23
12	25
13	-27
14	29
15	-31
16	33
17	-35
18	37
19	-39
20	41
21	-43
22	45
23	-47
24	49
25	-51
26	53
27	-55
28	57
29	-59
30	61
31	-63
32	65
33	-67
34	69
35	-71
36	73
37	-75
38	77
39	-79
40	81
41	-83
42	85
43	-87
44	89
45	-91
46	93
47	-95
48	97
49	-99
50	101
51	-103
52	105
53	-107
54	109
55	-111
56	113
57	-115

[1, -3, 5, -7, 9, -11, 13, -15, 17, -19, 21, -23, 25, -27, 29, -31, 33, -35, 37, -39, 41, -43, 45, -47, 49, -51, 53, -55, 57, -59, 61, -63, 65, -67, 69, -71, 73, -75, 77, -79, 81, -83, 85, -87, 89, -91, 93, -95, 97, -99, 101, -103, 105, -107, 109, -111, 113, -115]

cp's OEIS Frontend

A157142 Signed denominators of Leibniz series for Pi/4.

Table of values

List of values