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 | 5 |
| 4 | 4 |
| 5 | 23 |
| 6 | 71 |
| 7 | 527 |
| 8 | 316 |
| 9 | 117 |
| 10 | 283 |
| 11 | 3183 |
| 12 | 5737 |
| 13 | 75736 |
| 14 | 170777 |
| 15 | 186793 |
| 16 | 100904 |
| 17 | 1730383 |
| 18 | 1295397 |
| 19 | 24782713 |
| 20 | 13522987 |
| 21 | 42878411 |
| 22 | 91488457 |
| 23 | 2113934201 |
| 24 | 1149922463 |
| 25 | 234446350 |
| 26 | 494634185 |
| 27 | 169835681 |
| 28 | 89698402 |
| 29 | 2608690087 |
| 30 | 84946052281 |
| 31 | 2639797313941 |
| 32 | 1370038779503 |
| 33 | 1412581913773 |