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 | 2 |
| 2 | 37 |
| 3 | 2397 |
| 4 | 153437 |
| 5 | 157119967 |
| 6 | 40222711647 |
| 7 | 2574253545437 |
| 8 | 2636035630527967 |
| 9 | 674825121415159677 |
| 10 | 691020924329123509751 |
| 11 | 176901356628255618496351 |
| 12 | 181146989187333753340263903 |
| 13 | 741978067711319053681720948727 |