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) |
|---|---|
| 5 | 6 |
| 6 | 56 |
| 7 | 252 |
| 8 | 792 |
| 9 | 2002 |
| 10 | 4368 |
| 11 | 8568 |
| 12 | 15504 |
| 13 | 26334 |
| 14 | 42504 |
| 15 | 65780 |
| 16 | 98280 |
| 17 | 142506 |
| 18 | 201376 |
| 19 | 278256 |
| 20 | 376992 |
| 21 | 501942 |
| 22 | 658008 |
| 23 | 850668 |
| 24 | 1086008 |
| 25 | 1370754 |
| 26 | 1712304 |
| 27 | 2118760 |
| 28 | 2598960 |
| 29 | 3162510 |
| 30 | 3819816 |
| 31 | 4582116 |
| 32 | 5461512 |
| 33 | 6471002 |
| 34 | 7624512 |