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 | 8 |
| 2 | 76 |
| 3 | 844 |
| 4 | 10776 |
| 5 | 155844 |
| 6 | 2520856 |
| 7 | 45125924 |
| 8 | 886037216 |
| 9 | 18938440324 |
| 10 | 437820992136 |
| 11 | 10886467502244 |
| 12 | 289738784758096 |
| 13 | 8218731027307844 |
| 14 | 247539834718198136 |
| 15 | 7889896358130120484 |
| 16 | 265325716114102815936 |
| 17 | 9388476560982511842564 |
| 18 | 348703400008471862936296 |