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) |
|---|---|
| 1 | 1 |
| 2 | 16 |
| 3 | 313 |
| 4 | 2320 |
| 5 | 12160 |
| 6 | 53744 |
| 7 | 209428 |
| 8 | 683524 |
| 9 | 1905625 |
| 10 | 4664384 |
| 11 | 10297579 |
| 12 | 20907590 |
| 13 | 39664250 |
| 14 | 71114916 |
| 15 | 121559433 |
| 16 | 199459466 |
| 17 | 315906248 |
| 18 | 485124352 |
| 19 | 725031335 |
| 20 | 1057839684 |
| 21 | 1510706686 |
| 22 | 2116429956 |
| 23 | 2914190277 |
| 24 | 3950340692 |