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 | 107 |
| 2 | 4201 |
| 3 | 18181981 |
| 4 | 29884303 |
| 5 | 72147193 |
| 6 | 81927499 |
| 7 | 208506511 |
| 8 | 383148631 |
| 9 | 402473443 |
| 10 | 1106558899 |
| 11 | 1391119621 |
| 12 | 1459314919 |
| 13 | 1498299289 |
| 14 | 1945171369 |
| 15 | 4593570199 |
| 16 | 7908301729 |
| 17 | 8052037969 |
| 18 | 9970592521 |
| 19 | 10594343761 |
| 20 | 11304695329 |
| 21 | 14119758703 |
| 22 | 15111907009 |
| 23 | 23157107803 |