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 | 0 |
| 1 | 1 |
| 2 | 10 |
| 3 | 35 |
| 4 | 120 |
| 5 | 220 |
| 6 | 455 |
| 7 | 2024 |
| 8 | 1771 |
| 9 | 4060 |
| 10 | 14190 |
| 11 | 16215 |
| 12 | 129766 |
| 13 | 32509 |
| 14 | 1414910 |
| 15 | 1823471 |
| 16 | 5159805 |
| 17 | 8171255 |
| 18 | 4192244 |
| 19 | 24117100 |
| 20 | 30865405 |
| 21 | 334985911 |
| 22 | 192937325 |
| 23 | 1610599145 |
| 24 | 1048440315 |
| 25 | 4261347265 |
| 26 | 4244012991 |
| 27 | 63828916911 |
| 28 | 213588635511 |
| 29 | 133110357279 |