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 | 33 |
| 1 | 524 |
| 2 | -2322 |
| 3 | 81912 |
| 4 | 214181 |
| 5 | 1182276 |
| 6 | 3736614 |
| 7 | 9972264 |
| 8 | 24622002 |
| 9 | 51265020 |
| 10 | 106396576 |
| 11 | 202547304 |
| 12 | 357914103 |
| 13 | 613924280 |
| 14 | 1011319830 |
| 15 | 1625884896 |
| 16 | 2508545328 |
| 17 | 3777689232 |
| 18 | 5589515982 |
| 19 | 8076649672 |
| 20 | 11456490906 |
| 21 | 15968552484 |
| 22 | 22005025446 |