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 | 2 |
| 1 | 1 |
| 2 | 6 |
| 3 | 31 |
| 4 | 64 |
| 5 | 331 |
| 6 | 814 |
| 7 | 1607 |
| 8 | 4107 |
| 9 | 5129 |
| 10 | 10283 |
| 11 | 12819 |
| 12 | 16163 |
| 13 | 40108 |
| 14 | 80313 |
| 15 | 100153 |
| 16 | 256379 |
| 17 | 1281895 |
| 18 | 2571143 |
| 19 | 3130008 |