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 | 2 |
| 3 | 3 |
| 4 | 21 |
| 5 | 34 |
| 6 | 610 |
| 7 | 196418 |
| 8 | 24157817 |
| 9 | 39088169 |
| 10 | 701408733 |
| 11 | 72723460248141 |
| 12 | 2427893228399975082453 |
| 13 | 781774079430987230203437 |
| 14 | 36726740705505779255899443 |
| 15 | 150804340016807970735635273952047185 |
| 16 | 453973694165307953197296969697410619233826 |