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 | 43 |
| 2 | 73 |
| 3 | 2089 |
| 4 | 8233 |
| 5 | 131113 |
| 6 | 33554473 |
| 7 | 137438953513 |
| 8 | 140737488355369 |
| 9 | 9007199254741033 |
| 10 | 2658455991569831745807614120560689193 |