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.
n | a(n) |
---|---|
1 | 4 |
2 | 8 |
3 | 48 |
4 | 242 |
5 | 844 |
6 | 22020 |
7 | 217070 |
8 | 1092747 |
9 | 8870024 |
10 | 221167422 |
11 | 221167422 |
12 | 47255689915 |
13 | 82462576220 |
14 | 1043460553364 |
15 | 79180770078548 |
16 | 3215226335143218 |
17 | 23742453640900972 |
18 | 125781000834058568 |