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 | 6 |
| 3 | 8 |
| 4 | 13 |
| 5 | 19 |
| 6 | 21 |
| 7 | 105 |
| 8 | 401 |
| 9 | 1053 |
| 10 | 2012 |
| 11 | 4310 |
| 12 | 114743 |
| 13 | 235156 |
| 14 | 287799 |
| 15 | 1269345 |
| 16 | 1481217 |
| 17 | 1978865 |
| 18 | 2703836 |
| 19 | 3103386 |
| 20 | 3325474 |
| 21 | 18167905 |
| 22 | 553255504 |
| 23 | 782224772 |
| 24 | 1039603284 |
| 25 | 26121336847 |
| 26 | 37996375306 |
| 27 | 60661762577 |
| 28 | 109713190320 |