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 | 5 |
| 2 | 53 |
| 3 | 541 |
| 4 | 5413 |
| 5 | 54133 |
| 6 | 541339 |
| 7 | 5413391 |
| 8 | 54133921 |
| 9 | 541339231 |
| 10 | 5413392311 |
| 11 | 54133923121 |
| 12 | 541339231241 |
| 13 | 5413392312463 |
| 14 | 54133923124643 |
| 15 | 541339231246433 |
| 16 | 5413392312464369 |
| 17 | 54133923124643743 |
| 18 | 541339231246437473 |