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 | 1 |
| 2 | 2 |
| 3 | 11 |
| 4 | 12 |
| 5 | 15 |
| 6 | 16 |
| 7 | 22 |
| 8 | 31 |
| 9 | 76 |
| 10 | 152 |
| 11 | 309 |
| 12 | 1576 |
| 13 | 375479 |
| 14 | 781314 |
| 15 | 1114986 |
| 16 | 3734218 |
| 17 | 24311881 |
| 18 | 68133239 |
| 19 | 147881549 |