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.

A384585 a(n) = 6 * (4*n)! / ((n+1)! * (3*n+1)!).

Table of values

n a(n)
0 6
1 3
2 8
3 33
4 168
5 969
6 6072
7 40365
8 280488
9 2017356
10 14914848
11 112784399
12 869046168
13 6803716710
14 53997506640
15 433647466245
16 3518801467560
17 28815074239908
18 237887596740192
19 1978246301709540
20 16558857808956320
21 139428557033056785
22 1180350813375438840
23 10041660963789578955

List of values

[6, 3, 8, 33, 168, 969, 6072, 40365, 280488, 2017356, 14914848, 112784399, 869046168, 6803716710, 53997506640, 433647466245, 3518801467560, 28815074239908, 237887596740192, 1978246301709540, 16558857808956320, 139428557033056785, 1180350813375438840, 10041660963789578955]