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) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 41 |
| 3 | 603 |
| 4 | 8081 |
| 5 | 102003 |
| 6 | 1240121 |
| 7 | 14704203 |
| 8 | 171312161 |
| 9 | 1970527203 |
| 10 | 22450640201 |
| 11 | 253930611003 |
| 12 | 2855998840241 |
| 13 | 31980846315603 |
| 14 | 356873041128281 |
| 15 | 3971357037321003 |
| 16 | 44096709674720321 |
| 17 | 488769846799627203 |