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.

A124819 Number triangle T(n,k)=C(n+2k+1,3k+1).

Table of values

n a(n)
0 1
1 2
2 1
3 3
4 5
5 1
6 4
7 15
8 8
9 1
10 5
11 35
12 36
13 11
14 1
15 6
16 70
17 120
18 66
19 14
20 1
21 7
22 126
23 330
24 286
25 105
26 17
27 1
28 8
29 210
30 792
31 1001
32 560
33 153
34 20
35 1
36 9
37 330
38 1716
39 3003
40 2380
41 969
42 210
43 23
44 1
45 10
46 495
47 3432
48 8008
49 8568
50 4845
51 1540
52 276

List of values

[1, 2, 1, 3, 5, 1, 4, 15, 8, 1, 5, 35, 36, 11, 1, 6, 70, 120, 66, 14, 1, 7, 126, 330, 286, 105, 17, 1, 8, 210, 792, 1001, 560, 153, 20, 1, 9, 330, 1716, 3003, 2380, 969, 210, 23, 1, 10, 495, 3432, 8008, 8568, 4845, 1540, 276]