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.

A099089 Riordan array (1, 2+x).

Table of values

n a(n)
0 1
1 0
2 2
3 0
4 1
5 4
6 0
7 0
8 4
9 8
10 0
11 0
12 1
13 12
14 16
15 0
16 0
17 0
18 6
19 32
20 32
21 0
22 0
23 0
24 1
25 24
26 80
27 64
28 0
29 0
30 0
31 0
32 8
33 80
34 192
35 128
36 0
37 0
38 0
39 0
40 1
41 40
42 240
43 448
44 256
45 0
46 0
47 0
48 0
49 0
50 10
51 160
52 672
53 1024
54 512
55 0
56 0
57 0
58 0
59 0
60 1
61 60
62 560
63 1792
64 2304
65 1024
66 0
67 0
68 0
69 0
70 0
71 0
72 12
73 280
74 1792
75 4608
76 5120
77 2048

List of values

[1, 0, 2, 0, 1, 4, 0, 0, 4, 8, 0, 0, 1, 12, 16, 0, 0, 0, 6, 32, 32, 0, 0, 0, 1, 24, 80, 64, 0, 0, 0, 0, 8, 80, 192, 128, 0, 0, 0, 0, 1, 40, 240, 448, 256, 0, 0, 0, 0, 0, 10, 160, 672, 1024, 512, 0, 0, 0, 0, 0, 1, 60, 560, 1792, 2304, 1024, 0, 0, 0, 0, 0, 0, 12, 280, 1792, 4608, 5120, 2048]