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.

A108916 Triangle of Schroeder paths counted by number of diagonal steps not preceded by an east step.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 2
5 1
6 9
7 9
8 3
9 1
10 31
11 36
12 18
13 4
14 1
15 113
16 155
17 90
18 30
19 5
20 1
21 431
22 678
23 465
24 180
25 45
26 6
27 1
28 1697
29 3017
30 2373
31 1085
32 315
33 63
34 7
35 1
36 6847
37 13576
38 12068
39 6328
40 2170
41 504
42 84
43 8
44 1
45 28161
46 61623
47 61092
48 36204
49 14238
50 3906
51 756
52 108
53 9
54 1
55 117631
56 281610
57 308115
58 203640
59 90510
60 28476
61 6510
62 1080
63 135
64 10
65 1

List of values

[1, 1, 1, 3, 2, 1, 9, 9, 3, 1, 31, 36, 18, 4, 1, 113, 155, 90, 30, 5, 1, 431, 678, 465, 180, 45, 6, 1, 1697, 3017, 2373, 1085, 315, 63, 7, 1, 6847, 13576, 12068, 6328, 2170, 504, 84, 8, 1, 28161, 61623, 61092, 36204, 14238, 3906, 756, 108, 9, 1, 117631, 281610, 308115, 203640, 90510, 28476, 6510, 1080, 135, 10, 1]