A134429 - cp's OEIS frontend

A134429 a(n) = (-1)^(1 + n) * 2 * ( -1/2 -n + (-1)^((1 + n)*(2 + n)/2)).

n	a(n)
0	3
1	-5
2	3
3	-5
4	11
5	-13
6	11
7	-13
8	19
9	-21
10	19
11	-21
12	27
13	-29
14	27
15	-29
16	35
17	-37
18	35
19	-37
20	43
21	-45
22	43
23	-45
24	51
25	-53
26	51
27	-53
28	59
29	-61
30	59
31	-61
32	67
33	-69
34	67
35	-69
36	75
37	-77
38	75
39	-77
40	83
41	-85
42	83
43	-85
44	91
45	-93
46	91
47	-93
48	99
49	-101
50	99
51	-101
52	107
53	-109
54	107
55	-109
56	115
57	-117
58	115
59	-117
60	123
61	-125
62	123
63	-125
64	131
65	-133
66	131

[3, -5, 3, -5, 11, -13, 11, -13, 19, -21, 19, -21, 27, -29, 27, -29, 35, -37, 35, -37, 43, -45, 43, -45, 51, -53, 51, -53, 59, -61, 59, -61, 67, -69, 67, -69, 75, -77, 75, -77, 83, -85, 83, -85, 91, -93, 91, -93, 99, -101, 99, -101, 107, -109, 107, -109, 115, -117, 115, -117, 123, -125, 123, -125, 131, -133, 131]

cp's OEIS Frontend

A134429 a(n) = (-1)^(1 + n) * 2 * ( -1/2 -n + (-1)^((1 + n)*(2 + n)/2)).

Table of values

List of values