cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A374157 a(n) = (-1)^floor(n/2)*n.

Table of values

n a(n)
0 0
1 1
2 -2
3 -3
4 4
5 5
6 -6
7 -7
8 8
9 9
10 -10
11 -11
12 12
13 13
14 -14
15 -15
16 16
17 17
18 -18
19 -19
20 20
21 21
22 -22
23 -23
24 24
25 25
26 -26
27 -27
28 28
29 29
30 -30
31 -31
32 32
33 33
34 -34
35 -35
36 36
37 37
38 -38
39 -39
40 40
41 41
42 -42
43 -43
44 44
45 45
46 -46
47 -47
48 48
49 49
50 -50
51 -51
52 52
53 53
54 -54
55 -55
56 56
57 57
58 -58
59 -59

List of values

[0, 1, -2, -3, 4, 5, -6, -7, 8, 9, -10, -11, 12, 13, -14, -15, 16, 17, -18, -19, 20, 21, -22, -23, 24, 25, -26, -27, 28, 29, -30, -31, 32, 33, -34, -35, 36, 37, -38, -39, 40, 41, -42, -43, 44, 45, -46, -47, 48, 49, -50, -51, 52, 53, -54, -55, 56, 57, -58, -59]