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 | 3 |
| 2 | 11 |
| 3 | 9491 |
| 4 | 12258083 |
| 5 | 36774249 |
| 6 | 2159487563 |
| 7 | 2561252691 |
| 8 | 2723957777 |
| 9 | 6478462689 |
| 10 | 8171873331 |
| 11 | 333351714587 |
| 12 | 146217070005379 |
| 13 | 438651210016137 |
| 14 | 13919982618156833 |
| 15 | 41759947854470499 |
| 16 | 1278907806311980217974478364841 |