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 | 19 |
| 2 | 53 |
| 3 | 1583 |
| 4 | 3509 |
| 5 | 6479 |
| 6 | 223309 |
| 7 | 291205 |
| 8 | 65791 |
| 9 | 56179 |
| 10 | 50039 |
| 11 | 3505843 |
| 12 | 456456275 |
| 13 | 16781311 |
| 14 | 5734169 |
| 15 | 4144461731 |
| 16 | 23461111 |
| 17 | 56585278013 |
| 18 | 50656373 |
| 19 | 164136392937 |