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 | 4 |
| 2 | 10 |
| 3 | 24 |
| 4 | 58 |
| 5 | 140 |
| 6 | 338 |
| 7 | 816 |
| 8 | 1909 |
| 9 | 4296 |
| 10 | 8893 |
| 11 | 17160 |
| 12 | 28891 |
| 13 | 37996 |
| 14 | 37678 |
| 15 | 27186 |
| 16 | 13051 |
| 17 | 4128 |
| 18 | 1199 |
| 19 | 372 |
| 20 | 122 |
| 21 | 36 |
| 22 | 10 |
| 23 | 2 |