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 | 77 |
| 3 | 489 |
| 4 | 557 |
| 5 | 1101 |
| 6 | 1431 |
| 7 | 2409 |
| 8 | 8897 |
| 9 | 538209 |
| 10 | 2263024 |
| 11 | 8910721 |
| 12 | 13685781 |
| 13 | 17428321 |
| 14 | 962402769 |
| 15 | 128508838576 |