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 | 164 |
| 2 | 2138 |
| 3 | 48490 |
| 4 | 956866 |
| 5 | 20014278 |
| 6 | 407900408 |
| 7 | 8454015792 |
| 8 | 173331549156 |
| 9 | 3583467036398 |
| 10 | 73637531304764 |
| 11 | 1520470917860158 |
| 12 | 31281412038561736 |
| 13 | 645413766480453102 |
| 14 | 13287410455121938834 |
| 15 | 274025926174436180190 |