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 | 11 |
| 2 | 40 |
| 3 | 312 |
| 4 | 4888 |
| 5 | 534888 |
| 6 | 265371785 |
| 7 | 5365294080 |
| 8 | 1111111111111111111 |
| 9 | 11111111111111111111111 |
| 10 | 77843964391 |
| 11 | 57336415063797550469 |
| 12 | 2212394296770453025145 |
| 13 | 201763709900322803748658482662 |