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 | 106 |
| 3 | 877203 |
| 4 | 2195225334 |
| 5 | 17599271777 |
| 6 | 360950005720 |
| 7 | 17348726394920 |
| 8 | 1996375977735378 |
| 9 | 26627865341803449 |
| 10 | 668044491303666717 |
| 11 | 13157161331655387213 |
| 12 | 7653283960850915182425 |
| 13 | 3256741424583567733172850 |
| 14 | 388712386741794886666062286 |
| 15 | 266182386623377135274423955447 |