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.

A085841 Triangle: row #n has n+1 terms. T(n,m) = 4^m (2n+1)! / ( (2n-2m)! (2m+1)! ).

Table of values

n a(n)
0 1
1 3
2 4
3 5
4 40
5 16
6 7
7 140
8 336
9 64
10 9
11 336
12 2016
13 2304
14 256
15 11
16 660
17 7392
18 21120
19 14080
20 1024
21 13
22 1144
23 20592
24 109824
25 183040
26 79872
27 4096
28 15
29 1820
30 48048
31 411840
32 1281280
33 1397760
34 430080
35 16384

List of values

[1, 3, 4, 5, 40, 16, 7, 140, 336, 64, 9, 336, 2016, 2304, 256, 11, 660, 7392, 21120, 14080, 1024, 13, 1144, 20592, 109824, 183040, 79872, 4096, 15, 1820, 48048, 411840, 1281280, 1397760, 430080, 16384]