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 | 4322 |
| 2 | 2577513 |
| 3 | 290838284 |
| 4 | 11991502235 |
| 5 | 255657603186 |
| 6 | 3430832678207 |
| 7 | 32701809796548 |
| 8 | 239657412990669 |
| 9 | 1426274971770170 |
| 10 | 7169135482380621 |
| 11 | 31335724079805792 |
| 12 | 121778484808846083 |
| 13 | 428134536074377254 |
| 14 | 1380524064964529355 |
| 15 | 4128449284755670956 |