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.

A155887 Riordan array (1, (1/(1-x))c(x/(1-x))), c(x) the g.f. of A000108.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 2
5 1
6 0
7 5
8 4
9 1
10 0
11 15
12 14
13 6
14 1
15 0
16 51
17 50
18 27
19 8
20 1
21 0
22 188
23 187
24 113
25 44
26 10
27 1
28 0
29 731
30 730
31 468
32 212
33 65
34 12
35 1
36 0
37 2950
38 2949
39 1956
40 970
41 355
42 90
43 14
44 1
45 0
46 12235
47 12234
48 8291
49 4356
50 1785
51 550
52 119
53 16
54 1
55 0
56 51822
57 51821
58 35643
59 19474
60 8612
61 3021

List of values

[1, 0, 1, 0, 2, 1, 0, 5, 4, 1, 0, 15, 14, 6, 1, 0, 51, 50, 27, 8, 1, 0, 188, 187, 113, 44, 10, 1, 0, 731, 730, 468, 212, 65, 12, 1, 0, 2950, 2949, 1956, 970, 355, 90, 14, 1, 0, 12235, 12234, 8291, 4356, 1785, 550, 119, 16, 1, 0, 51822, 51821, 35643, 19474, 8612, 3021]