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 | 61 |
| 4 | 846 |
| 5 | 13771 |
| 6 | 248623 |
| 7 | 4816659 |
| 8 | 98277943 |
| 9 | 2086173336 |
| 10 | 45688601782 |
| 11 | 1026218795502 |
| 12 | 23536101285148 |
| 13 | 549336702455778 |
| 14 | 13014352354398322 |
| 15 | 312313455482385108 |
| 16 | 7579157833713922471 |