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.

A274093 a(0)=0; thereafter (-1)^n*n appears n times.

Table of values

n a(n)
0 0
1 -1
2 2
3 2
4 -3
5 -3
6 -3
7 4
8 4
9 4
10 4
11 -5
12 -5
13 -5
14 -5
15 -5
16 6
17 6
18 6
19 6
20 6
21 6
22 -7
23 -7
24 -7
25 -7
26 -7
27 -7
28 -7
29 8
30 8
31 8
32 8
33 8
34 8
35 8
36 8
37 -9
38 -9
39 -9
40 -9
41 -9
42 -9
43 -9
44 -9
45 -9
46 10
47 10
48 10
49 10
50 10
51 10
52 10
53 10
54 10
55 10
56 -11
57 -11
58 -11
59 -11
60 -11
61 -11
62 -11
63 -11
64 -11
65 -11
66 -11
67 12
68 12
69 12
70 12
71 12
72 12
73 12
74 12
75 12
76 12
77 12

List of values

[0, -1, 2, 2, -3, -3, -3, 4, 4, 4, 4, -5, -5, -5, -5, -5, 6, 6, 6, 6, 6, 6, -7, -7, -7, -7, -7, -7, -7, 8, 8, 8, 8, 8, 8, 8, 8, -9, -9, -9, -9, -9, -9, -9, -9, -9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, -11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.