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 | 3 |
| 2 | 33 |
| 3 | 177 |
| 4 | 5673 |
| 5 | 32613 |
| 6 | 513903 |
| 7 | 7343451 |
| 8 | 185804265 |
| 9 | 1849858773 |
| 10 | 30348858003 |
| 11 | 499616140191 |
| 12 | 10882786433775 |
| 13 | 141444270208647 |
| 14 | 2412815237573445 |
| 15 | 41425627536496497 |
| 16 | 824284992576210537 |
| 17 | 12447291755448613317 |