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.

A094527 Triangle T(n,k), read by rows, defined by T(n,k) = binomial(2*n,n-k).

Table of values

n a(n)
0 1
1 2
2 1
3 6
4 4
5 1
6 20
7 15
8 6
9 1
10 70
11 56
12 28
13 8
14 1
15 252
16 210
17 120
18 45
19 10
20 1
21 924
22 792
23 495
24 220
25 66
26 12
27 1
28 3432
29 3003
30 2002
31 1001
32 364
33 91
34 14
35 1
36 12870
37 11440
38 8008
39 4368
40 1820
41 560
42 120
43 16
44 1
45 48620
46 43758
47 31824
48 18564
49 8568
50 3060
51 816
52 153
53 18
54 1
55 184756
56 167960

List of values

[1, 2, 1, 6, 4, 1, 20, 15, 6, 1, 70, 56, 28, 8, 1, 252, 210, 120, 45, 10, 1, 924, 792, 495, 220, 66, 12, 1, 3432, 3003, 2002, 1001, 364, 91, 14, 1, 12870, 11440, 8008, 4368, 1820, 560, 120, 16, 1, 48620, 43758, 31824, 18564, 8568, 3060, 816, 153, 18, 1, 184756, 167960]