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.

A171224 Riordan array (f(x),x*f(x)) where f(x) is the g.f. of A117641.

Table of values

n a(n)
0 1
1 0
2 1
3 1
4 0
5 1
6 3
7 2
8 0
9 1
10 11
11 6
12 3
13 0
14 1
15 42
16 23
17 9
18 4
19 0
20 1
21 167
22 90
23 36
24 12
25 5
26 0
27 1
28 684
29 365
30 144
31 50
32 15
33 6
34 0
35 1
36 2867
37 1518
38 595
39 204
40 65
41 18
42 7
43 0
44 1
45 12240
46 6441
47 2511
48 858
49 270
50 81
51 21
52 8
53 0
54 1
55 53043
56 27774
57 10782
58 3672
59 1155
60 342
61 98
62 24
63 9
64 0
65 1

List of values

[1, 0, 1, 1, 0, 1, 3, 2, 0, 1, 11, 6, 3, 0, 1, 42, 23, 9, 4, 0, 1, 167, 90, 36, 12, 5, 0, 1, 684, 365, 144, 50, 15, 6, 0, 1, 2867, 1518, 595, 204, 65, 18, 7, 0, 1, 12240, 6441, 2511, 858, 270, 81, 21, 8, 0, 1, 53043, 27774, 10782, 3672, 1155, 342, 98, 24, 9, 0, 1]