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 | 966 |
| 2 | 4386 |
| 3 | 20004 |
| 4 | 91212 |
| 5 | 415650 |
| 6 | 1893780 |
| 7 | 8628792 |
| 8 | 39320988 |
| 9 | 179184654 |
| 10 | 816514170 |
| 11 | 3720653346 |
| 12 | 16954232310 |
| 13 | 77257406100 |
| 14 | 352048294158 |
| 15 | 1604217270528 |
| 16 | 7310107829838 |
| 17 | 33310766859666 |
| 18 | 151790888076216 |
| 19 | 691682436483000 |