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) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 37 |
| 3 | 114 |
| 4 | 1405 |
| 5 | 4329 |
| 6 | 53353 |
| 7 | 164388 |
| 8 | 2026009 |
| 9 | 6242415 |
| 10 | 76934989 |
| 11 | 237047382 |
| 12 | 2921503573 |
| 13 | 9001558101 |
| 14 | 110940200785 |
| 15 | 341822160456 |
| 16 | 4212806126257 |
| 17 | 12980240539227 |
| 18 | 159975692596981 |
| 19 | 492907318330170 |
| 20 | 6074863512559021 |
| 21 | 18717497856007233 |
| 22 | 230684837784645817 |