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 | 294409 |
| 2 | 1299963601 |
| 3 | 4215885697 |
| 4 | 4562359201 |
| 5 | 7629221377 |
| 6 | 13079177569 |
| 7 | 19742849041 |
| 8 | 45983665729 |
| 9 | 65700513721 |
| 10 | 147523256371 |
| 11 | 168003672409 |
| 12 | 227959335001 |
| 13 | 459814831561 |
| 14 | 582561482161 |
| 15 | 1042789205881 |
| 16 | 1297472175451 |
| 17 | 1544001719761 |
| 18 | 2718557844481 |
| 19 | 3253891093249 |
| 20 | 4116931056001 |
| 21 | 4226818060921 |
| 22 | 4406163138721 |
| 23 | 4764162536641 |
| 24 | 4790779641001 |
| 25 | 5419967134849 |
| 26 | 7298963852041 |
| 27 | 8470346587201 |