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.

A206474 Riordan array ((1+x-x^2)/(1-x^2), x/(1-x^2)).

Table of values

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

List of values

[1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 2, 2, 1, 1, 1, 1, 3, 3, 1, 1, 0, 3, 3, 4, 4, 1, 1, 1, 1, 6, 6, 5, 5, 1, 1, 0, 4, 4, 10, 10, 6, 6, 1, 1, 1, 1, 10, 10, 15, 15, 7, 7, 1, 1, 0, 5, 5, 20, 20, 21, 21, 8, 8, 1, 1, 1, 1, 15, 15, 35, 35, 28, 28, 9, 9, 1, 1]