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 | 2 |
| 2 | 6 |
| 3 | 11 |
| 4 | 30 |
| 5 | 32 |
| 6 | 64 |
| 7 | 1346 |
| 8 | 1349 |
| 9 | 1367 |
| 10 | 10715 |
| 11 | 12253 |
| 12 | 26886 |
| 13 | 733412 |
| 14 | 733420 |
| 15 | 733533 |
| 16 | 734596 |
| 17 | 6363182 |
| 18 | 6363183 |
| 19 | 6363289 |
| 20 | 7437658 |
| 21 | 503193257 |
| 22 | 503193259 |
| 23 | 503279746 |
| 24 | 504057767 |
| 25 | 1346029458 |
| 26 | 4555878955 |
| 27 | 12238593622 |
| 28 | 1035905650780 |
| 29 | 309353882444942 |
| 30 | 2907021742443975 |