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 | 60073 |
| 3 | 71280377 |
| 4 | 14843001474 |
| 5 | 1091618326275 |
| 6 | 39736919990851 |
| 7 | 870012241054523 |
| 8 | 12967387960026452 |
| 9 | 143075291905145949 |
| 10 | 1240006139651007925 |
| 11 | 8817026830146599701 |
| 12 | 53151169903167142598 |
| 13 | 278615540073819826527 |
| 14 | 1295610629596485350799 |
| 15 | 5430916505417064431575 |