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 | 21 |
| 2 | 3 |
| 3 | 8480 |
| 4 | 1356 |
| 5 | 18162 |
| 6 | 149 |
| 7 | 78495 |
| 8 | 291 |
| 9 | 1194707 |
| 10 | 8567 |
| 11 | 1426107 |
| 12 | 4090 |
| 13 | 6029619 |
| 14 | 59748 |
| 15 | 325034101 |
| 16 | 95590 |