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 | 5 |
| 2 | 6 |
| 3 | 11 |
| 4 | 61 |
| 5 | 1353 |
| 6 | 6826 |
| 7 | 8179 |
| 8 | 15005 |
| 9 | 83204 |
| 10 | 1845493 |
| 11 | 9310669 |
| 12 | 11156162 |
| 13 | 20466831 |
| 14 | 113490317 |
| 15 | 2517253805 |
| 16 | 12699759342 |
| 17 | 15217013147 |
| 18 | 27916772489 |
| 19 | 154800875592 |
| 20 | 3433536035513 |
| 21 | 17322481053157 |
| 22 | 20756017088670 |
| 23 | 38078498141827 |
| 24 | 211148507797805 |