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.

A344728 a(n) = (9*n/4 - 51/8 - 5/(16*n-24) + 1/n + 6/(n+1))*binomial(2*n-2,n-1).

Table of values

n a(n)
3 12
4 79
5 419
6 2036
7 9435
8 42449
9 187187
10 813592
11 3497988
12 14912910
13 63151022
14 265958200
15 1114981465
16 4656455685
17 19383036675
18 80456688240
19 333146169840
20 1376479675890
21 5676426414810
22 23369047049400
23 96060414949590

List of values

[12, 79, 419, 2036, 9435, 42449, 187187, 813592, 3497988, 14912910, 63151022, 265958200, 1114981465, 4656455685, 19383036675, 80456688240, 333146169840, 1376479675890, 5676426414810, 23369047049400, 96060414949590]