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.

A103517 Expansion of (1+2*x-x^2)/(1-x)^2.

Table of values

n a(n)
0 1
1 4
2 6
3 8
4 10
5 12
6 14
7 16
8 18
9 20
10 22
11 24
12 26
13 28
14 30
15 32
16 34
17 36
18 38
19 40
20 42
21 44
22 46
23 48
24 50
25 52
26 54
27 56
28 58
29 60
30 62
31 64
32 66
33 68
34 70
35 72
36 74
37 76
38 78
39 80
40 82
41 84
42 86
43 88
44 90
45 92
46 94
47 96
48 98
49 100
50 102
51 104
52 106
53 108
54 110
55 112
56 114
57 116
58 118
59 120
60 122
61 124
62 126

List of values

[1, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126]