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.

A107030 Number triangle associated with the Riordan arrays (1/(1+x),x/(1+x)^k),k>=0.

Table of values

n a(n)
0 1
1 2
2 1
3 2
4 2
5 1
6 2
7 4
8 2
9 1
10 2
11 8
12 6
13 2
14 1
15 2
16 16
17 20
18 8
19 2
20 1
21 2
22 32
23 70
24 38
25 10
26 2
27 1
28 2
29 64
30 252
31 196
32 62
33 12
34 2
35 1
36 2
37 128
38 924
39 1062
40 426
41 92
42 14
43 2
44 1
45 2
46 256
47 3432
48 5948
49 3112
50 792
51 128
52 16
53 2
54 1
55 2
56 512
57 12870
58 34120
59 23686
60 7302
61 1326
62 170
63 18
64 2
65 1

List of values

[1, 2, 1, 2, 2, 1, 2, 4, 2, 1, 2, 8, 6, 2, 1, 2, 16, 20, 8, 2, 1, 2, 32, 70, 38, 10, 2, 1, 2, 64, 252, 196, 62, 12, 2, 1, 2, 128, 924, 1062, 426, 92, 14, 2, 1, 2, 256, 3432, 5948, 3112, 792, 128, 16, 2, 1, 2, 512, 12870, 34120, 23686, 7302, 1326, 170, 18, 2, 1]