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.

A384137 a(n) = (4*n)!/(3*n)! * Sum_{k=1..n} 1/(3*n+k).

Table of values

n a(n)
1 1
2 15
3 362
4 12122
5 520024
6 27216936
7 1681732464
8 119823343440
9 9671547654720
10 872215286083200
11 86920331742115200
12 9485402065890543360
13 1124985637517264409600
14 144084905450972444851200
15 19819350850103541715507200
16 2914041773775561429169612800
17 456069533875430113486232985600

List of values

[1, 15, 362, 12122, 520024, 27216936, 1681732464, 119823343440, 9671547654720, 872215286083200, 86920331742115200, 9485402065890543360, 1124985637517264409600, 144084905450972444851200, 19819350850103541715507200, 2914041773775561429169612800, 456069533875430113486232985600]