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.

A132277 Triangle read by rows: T(n,k) is number of paths in the first quadrant from (0,0) to (n,0) using steps U=(1,1), D=(1,-1), h=(1,0) and H=(2,0), having exactly k h-steps.

Table of values

n a(n)
0 1
1 0
2 1
3 2
4 0
5 1
6 0
7 5
8 0
9 1
10 6
11 0
12 9
13 0
14 1
15 0
16 25
17 0
18 14
19 0
20 1
21 22
22 0
23 66
24 0
25 20
26 0
27 1
28 0
29 129
30 0
31 140
32 0
33 27
34 0
35 1
36 90
37 0
38 450
39 0
40 260
41 0
42 35
43 0
44 1
45 0
46 681
47 0
48 1210
49 0
50 441
51 0
52 44
53 0
54 1
55 394
56 0
57 2955
58 0
59 2765
60 0
61 700
62 0
63 54
64 0
65 1
66 0
67 3653
68 0
69 9625
70 0
71 5642
72 0
73 1056
74 0
75 65
76 0
77 1

List of values

[1, 0, 1, 2, 0, 1, 0, 5, 0, 1, 6, 0, 9, 0, 1, 0, 25, 0, 14, 0, 1, 22, 0, 66, 0, 20, 0, 1, 0, 129, 0, 140, 0, 27, 0, 1, 90, 0, 450, 0, 260, 0, 35, 0, 1, 0, 681, 0, 1210, 0, 441, 0, 44, 0, 1, 394, 0, 2955, 0, 2765, 0, 700, 0, 54, 0, 1, 0, 3653, 0, 9625, 0, 5642, 0, 1056, 0, 65, 0, 1]