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 | 2 |
| 2 | 1 |
| 3 | 4 |
| 4 | 9 |
| 5 | 44 |
| 6 | 195 |
| 7 | 1186 |
| 8 | 7385 |
| 9 | 49444 |
| 10 | 337504 |
| 11 | 2353664 |
| 12 | 16608401 |
| 13 | 118432965 |
| 14 | 851396696 |
| 15 | 6163949361 |
| 16 | 44896941979 |