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 | 5 |
| 1 | 247 |
| 2 | 1689 |
| 3 | 6731 |
| 4 | 20173 |
| 5 | 50415 |
| 6 | 110897 |
| 7 | 221779 |
| 8 | 411861 |
| 9 | 720743 |
| 10 | 1201225 |
| 11 | 1921947 |
| 12 | 2970269 |
| 13 | 4455391 |
| 14 | 6511713 |
| 15 | 9302435 |
| 16 | 13023397 |
| 17 | 17907159 |
| 18 | 24227321 |
| 19 | 32303083 |
| 20 | 42504045 |
| 21 | 55255247 |
| 22 | 71042449 |
| 23 | 90417651 |
| 24 | 114004853 |
| 25 | 142506055 |