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 | 17 |
| 2 | 108 |
| 3 | 444 |
| 4 | 1410 |
| 5 | 3762 |
| 6 | 8844 |
| 7 | 18876 |
| 8 | 37323 |
| 9 | 69355 |
| 10 | 122408 |
| 11 | 206856 |
| 12 | 336804 |
| 13 | 531012 |
| 14 | 813960 |
| 15 | 1217064 |
| 16 | 1780053 |
| 17 | 2552517 |
| 18 | 3595636 |
| 19 | 4984100 |
| 20 | 6808230 |
| 21 | 9176310 |
| 22 | 12217140 |
| 23 | 16082820 |
| 24 | 20951775 |