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 | 5 |
| 1 | 55 |
| 2 | 316 |
| 3 | 1284 |
| 4 | 4170 |
| 5 | 11550 |
| 6 | 28380 |
| 7 | 63492 |
| 8 | 131703 |
| 9 | 256685 |
| 10 | 474760 |
| 11 | 839800 |
| 12 | 1429428 |
| 13 | 2352732 |
| 14 | 3759720 |
| 15 | 5852760 |
| 16 | 8900265 |
| 17 | 13252899 |
| 18 | 19362596 |
| 19 | 27804700 |
| 20 | 39303550 |
| 21 | 54761850 |
| 22 | 75294180 |
| 23 | 102265020 |