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 | 17 |
| 2 | 257 |
| 3 | 260609 |
| 4 | 16580657 |
| 5 | 527972353 |
| 6 | 1054904321 |
| 7 | 33590968001 |
| 8 | 267934222337 |
| 9 | 2137144350721 |
| 10 | 279308966066204560897 |
| 11 | 4904838477959792746889087209953222309396481 |
| 12 | 623502124433801536413569315448615191583313921 |
| 13 | 9936775914719167257001281976859570231260282873 |