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 | 13 |
| 2 | 183 |
| 3 | 2085 |
| 4 | 20771 |
| 5 | 284289 |
| 6 | 3355439 |
| 7 | 38609160 |
| 8 | 476513137 |
| 9 | 5731862594 |
| 10 | 67900170433 |
| 11 | 820250735104 |
| 12 | 9868451991387 |
| 13 | 117996838335341 |
| 14 | 1418191530812586 |
| 15 | 17043255221943522 |
| 16 | 204368024253087875 |
| 17 | 2453682222488823920 |