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 | 41 |
| 2 | 409 |
| 3 | 4079 |
| 4 | 40787 |
| 5 | 407861 |
| 6 | 4078609 |
| 7 | 40786087 |
| 8 | 407860853 |
| 9 | 4078608529 |
| 10 | 40786085251 |
| 11 | 407860852417 |
| 12 | 4078608524153 |
| 13 | 40786085241529 |
| 14 | 407860852415231 |
| 15 | 4078608524152277 |
| 16 | 40786085241522707 |
| 17 | 407860852415227039 |
| 18 | 4078608524152270349 |
| 19 | 40786085241522703351 |
| 20 | 407860852415227033453 |