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 | 13 |
| 2 | 79 |
| 3 | 1901 |
| 4 | 11413 |
| 5 | 45659 |
| 6 | 273965 |
| 7 | 13150463 |
| 8 | 236709049 |
| 9 | 2840511019 |
| 10 | 17043070313 |
| 11 | 409033716905 |
| 12 | 2454202353433 |
| 13 | 29450428426921 |
| 14 | 58900856965277 |
| 15 | 1884827423966069 |
| 16 | 11308964545760729 |
| 17 | 407122723668993709 |