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 | 2 |
| 2 | 9 |
| 3 | 88 |
| 4 | 2111 |
| 5 | 118182 |
| 6 | 16649389 |
| 7 | 5547079988 |
| 8 | 4671840869691 |
| 9 | 9326302435784002 |
| 10 | 47100039978152210249 |
| 11 | 564020035264998031552848 |
| 12 | 17088883834526416216141122391 |
| 13 | 1227783027118593811726444427584862 |
| 14 | 223195138386683651821176756496371359589 |