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 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 5 |
| 6 | 10 |
| 7 | 19 |
| 8 | 41 |
| 9 | 81 |
| 10 | 196 |
| 11 | 474 |
| 12 | 1315 |
| 13 | 3871 |
| 14 | 15716 |
| 15 | 68291 |
| 16 | 339947 |
| 17 | 1851904 |
| 18 | 11717321 |
| 19 | 86766476 |