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.

A227624 a(n) = numerator of r(n), where r(n) = (4*n+2)!/((3*n)!*2^n).

Table of values

n a(n)
0 2
1 60
2 1260
3 30030
4 835380
5 26860680
6 984233250
7 40560770250
8 1858741384500
9 93814013878200
10 5172710627284200
11 309424040950649625
12 19960884210345828750
13 1381474908065669917500
14 102111212412024699633750
15 8028503070893011778321250

List of values

[2, 60, 1260, 30030, 835380, 26860680, 984233250, 40560770250, 1858741384500, 93814013878200, 5172710627284200, 309424040950649625, 19960884210345828750, 1381474908065669917500, 102111212412024699633750, 8028503070893011778321250]