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 | 18 |
| 2 | 170 |
| 3 | 1122 |
| 4 | 5813 |
| 5 | 25176 |
| 6 | 94791 |
| 7 | 318630 |
| 8 | 974643 |
| 9 | 2752112 |
| 10 | 7253764 |
| 11 | 18003544 |
| 12 | 42378246 |
| 13 | 95162260 |
| 14 | 204856291 |
| 15 | 424515042 |
| 16 | 849825768 |
| 17 | 1648470894 |
| 18 | 3106669574 |
| 19 | 5701318526 |
| 20 | 10209535012 |
| 21 | 17871859722 |
| 22 | 30631153147 |
| 23 | 51476598044 |
| 24 | 84931517948 |
| 25 | 137735283228 |
| 26 | 219783774729 |