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 | 8 |
| 3 | 15 |
| 4 | 232 |
| 5 | 449 |
| 6 | 7400 |
| 7 | 14351 |
| 8 | 237832 |
| 9 | 461313 |
| 10 | 7648968 |
| 11 | 14836623 |
| 12 | 246015528 |
| 13 | 477194433 |
| 14 | 7912700328 |
| 15 | 15348206223 |
| 16 | 254499628104 |
| 17 | 493651049985 |
| 18 | 8185582834056 |
| 19 | 15877514618127 |
| 20 | 263276481572712 |
| 21 | 510675448527297 |
| 22 | 8467876653984360 |