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.

A349468 a(n) = (4*n)! / (n! * (2*n)!).

Table of values

n a(n)
0 1
1 12
2 840
3 110880
4 21621600
5 5587021440
6 1799020903680
7 693908062848000
8 311911674250176000
9 160114659448423680000
10 92418181433630148096000
11 59248455951814527670272000
12 41770161446029242007541760000
13 32118041062654484854414417920000
14 26749739913610806671605150924800000

List of values

[1, 12, 840, 110880, 21621600, 5587021440, 1799020903680, 693908062848000, 311911674250176000, 160114659448423680000, 92418181433630148096000, 59248455951814527670272000, 41770161446029242007541760000, 32118041062654484854414417920000, 26749739913610806671605150924800000]