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 | 0 |
| 2 | 1 |
| 3 | 12 |
| 4 | 21 |
| 5 | 4224 |
| 6 | 153426 |
| 7 | 442451 |
| 8 | 471614 |
| 9 | 523291 |
| 10 | 4336232 |
| 11 | 474335342 |
| 12 | 3624263478 |
| 13 | 36443455382 |
| 14 | 244936365228 |
| 15 | 452527642826 |
| 16 | 593326437534 |
| 17 | 4372566243537 |