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 | 7 |
| 2 | 53 |
| 3 | 401 |
| 4 | 617 |
| 5 | 2713 |
| 6 | 4721 |
| 7 | 127217 |
| 8 | 203321 |
| 9 | 667577 |
| 10 | 1188857 |
| 11 | 3630521 |
| 12 | 8320057 |
| 13 | 11314657 |
| 14 | 12776761 |
| 15 | 14301073 |
| 16 | 24176441 |
| 17 | 37117433 |
| 18 | 50051873 |
| 19 | 56806201 |
| 20 | 73176001 |
| 21 | 82465553 |
| 22 | 107075321 |
| 23 | 176802361 |
| 24 | 234461753 |
| 25 | 324138041 |
| 26 | 324408401 |