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 | 17 |
| 2 | 323 |
| 3 | 6506 |
| 4 | 130664 |
| 5 | 2624438 |
| 6 | 52713275 |
| 7 | 1058774426 |
| 8 | 21266052797 |
| 9 | 427140088670 |