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 | 37 |
| 3 | 1069 |
| 4 | 20575 |
| 5 | 1346153 |
| 6 | 1214756107 |
| 7 | 20699705479 |
| 8 | 850029466379 |
| 9 | 19572345658457 |
| 10 | 137116980686111 |
| 11 | 411600123273343 |
| 12 | 1482039573988769177 |
| 13 | 456179332236626381 |
| 14 | 32398234503565880731 |
| 15 | 1199020509231104363863 |