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.

A109187 Triangle read by rows: T(n,k) is number of Grand Motzkin paths of length n having k (1,0)-steps.

Table of values

n a(n)
0 1
1 0
2 1
3 2
4 0
5 1
6 0
7 6
8 0
9 1
10 6
11 0
12 12
13 0
14 1
15 0
16 30
17 0
18 20
19 0
20 1
21 20
22 0
23 90
24 0
25 30
26 0
27 1
28 0
29 140
30 0
31 210
32 0
33 42
34 0
35 1
36 70
37 0
38 560
39 0
40 420
41 0
42 56
43 0
44 1
45 0
46 630
47 0
48 1680
49 0
50 756
51 0
52 72
53 0
54 1
55 252
56 0
57 3150
58 0
59 4200
60 0
61 1260
62 0
63 90
64 0
65 1
66 0
67 2772
68 0
69 11550
70 0
71 9240
72 0
73 1980
74 0
75 110
76 0
77 1

List of values

[1, 0, 1, 2, 0, 1, 0, 6, 0, 1, 6, 0, 12, 0, 1, 0, 30, 0, 20, 0, 1, 20, 0, 90, 0, 30, 0, 1, 0, 140, 0, 210, 0, 42, 0, 1, 70, 0, 560, 0, 420, 0, 56, 0, 1, 0, 630, 0, 1680, 0, 756, 0, 72, 0, 1, 252, 0, 3150, 0, 4200, 0, 1260, 0, 90, 0, 1, 0, 2772, 0, 11550, 0, 9240, 0, 1980, 0, 110, 0, 1]