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 | 1 |
| 2 | 20 |
| 3 | 23 |
| 4 | 24 |
| 5 | 523 |
| 6 | 2811 |
| 7 | 3465 |
| 8 | 3776 |
| 9 | 4567 |
| 10 | 6145 |
| 11 | 8507 |
| 12 | 9353 |
| 13 | 19790 |
| 14 | 41136 |
| 15 | 62097 |
| 16 | 72506 |
| 17 | 107346 |