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.

A302598 G.f.: Sum_{n>=0} (1 + (1+x)^n)^n / (2 + (1+x)^n)^(n+1).

Table of values

n a(n)
0 1
1 1
2 6
3 58
4 798
5 14150
6 307076
7 7881756
8 233536532
9 7844786248
10 294582696686
11 12228351266210
12 556017625969246
13 27482790417322218
14 1467194712330407238
15 84134395928742550138
16 5157545958316518485420
17 336574587493456290969620
18 23296320082405927961459550
19 1704662916739625989249415610
20 131480805016085834305348796128

List of values

[1, 1, 6, 58, 798, 14150, 307076, 7881756, 233536532, 7844786248, 294582696686, 12228351266210, 556017625969246, 27482790417322218, 1467194712330407238, 84134395928742550138, 5157545958316518485420, 336574587493456290969620, 23296320082405927961459550, 1704662916739625989249415610, 131480805016085834305348796128]