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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 8 |
| 4 | 27 |
| 5 | 97 |
| 6 | 373 |
| 7 | 1493 |
| 8 | 6163 |
| 9 | 26027 |
| 10 | 111897 |
| 11 | 488006 |
| 12 | 2153429 |
| 13 | 9596199 |
| 14 | 43121211 |
| 15 | 195165576 |
| 16 | 888861555 |
| 17 | 4070582971 |
| 18 | 18732710281 |
| 19 | 86584519280 |
| 20 | 401776434017 |
| 21 | 1870983991035 |
| 22 | 8740907398527 |
| 23 | 40956401225597 |