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.

A207327 Riordan array (1, x*(1+x)^2/(1-x)).

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 3
5 1
6 0
7 4
8 6
9 1
10 0
11 4
12 17
13 9
14 1
15 0
16 4
17 32
18 39
19 12
20 1
21 0
22 4
23 48
24 111
25 70
26 15
27 1
28 0
29 4
30 64
31 240
32 268
33 110
34 18
35 1
36 0
37 4
38 80
39 432
40 769
41 530
42 159
43 21
44 1
45 0
46 4
47 96
48 688
49 1792
50 1905
51 924
52 217
53 24
54 1
55 0
56 4

List of values

[1, 0, 1, 0, 3, 1, 0, 4, 6, 1, 0, 4, 17, 9, 1, 0, 4, 32, 39, 12, 1, 0, 4, 48, 111, 70, 15, 1, 0, 4, 64, 240, 268, 110, 18, 1, 0, 4, 80, 432, 769, 530, 159, 21, 1, 0, 4, 96, 688, 1792, 1905, 924, 217, 24, 1, 0, 4]