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) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 9 |
| 4 | 76 |
| 5 | 125 |
| 6 | 4686 |
| 7 | 5047 |
| 8 | 389768 |
| 9 | 1995849 |
| 10 | 62445610 |
| 11 | 39916811 |
| 12 | 23574862092 |
| 13 | 6227020813 |
| 14 | 5667436494734 |
| 15 | 55630647072015 |
| 16 | 2922249531801616 |
| 17 | 355687428096017 |
| 18 | 2425220588831040018 |
| 19 | 121645100408832019 |
| 20 | 1364553980880330240020 |
| 21 | 18677216386213152768021 |
| 22 | 1152100749379237026969622 |