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 | 31 |
| 3 | 431 |
| 4 | 7431 |
| 5 | 117431 |
| 6 | 18117431 |
| 7 | 2918117431 |
| 8 | 472918117431 |
| 9 | 76472918117431 |
| 10 | 12376472918117431 |
| 11 | 19912376472918117431 |
| 12 | 32219912376472918117431 |
| 13 | 52132219912376472918117431 |
| 14 | 84352132219912376472918117431 |