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 | 5 |
| 6 | 55 |
| 7 | 394 |
| 8 | 2225 |
| 9 | 11539 |
| 10 | 57064 |
| 11 | 273612 |
| 12 | 1283621 |
| 13 | 5924924 |
| 14 | 27005978 |
| 15 | 121861262 |
| 16 | 545368160 |
| 17 | 2423923480 |
| 18 | 10710273856 |
| 19 | 47085144255 |
| 20 | 206085075295 |
| 21 | 898489543020 |
| 22 | 3903621095130 |
| 23 | 16906888008960 |
| 24 | 73018012573950 |
| 25 | 314540265217362 |