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.

A099040 Riordan array (1, 2+2x).

Table of values

n a(n)
0 1
1 0
2 2
3 0
4 2
5 4
6 0
7 0
8 8
9 8
10 0
11 0
12 4
13 24
14 16
15 0
16 0
17 0
18 24
19 64
20 32
21 0
22 0
23 0
24 8
25 96
26 160
27 64
28 0
29 0
30 0
31 0
32 64
33 320
34 384
35 128
36 0
37 0
38 0
39 0
40 16
41 320
42 960
43 896
44 256
45 0
46 0
47 0
48 0
49 0
50 160
51 1280
52 2688
53 2048
54 512
55 0
56 0
57 0
58 0
59 0
60 32
61 960
62 4480
63 7168
64 4608
65 1024
66 0
67 0
68 0
69 0
70 0
71 0
72 384
73 4480
74 14336
75 18432
76 10240
77 2048

List of values

[1, 0, 2, 0, 2, 4, 0, 0, 8, 8, 0, 0, 4, 24, 16, 0, 0, 0, 24, 64, 32, 0, 0, 0, 8, 96, 160, 64, 0, 0, 0, 0, 64, 320, 384, 128, 0, 0, 0, 0, 16, 320, 960, 896, 256, 0, 0, 0, 0, 0, 160, 1280, 2688, 2048, 512, 0, 0, 0, 0, 0, 32, 960, 4480, 7168, 4608, 1024, 0, 0, 0, 0, 0, 0, 384, 4480, 14336, 18432, 10240, 2048]