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 | 5 |
| 3 | 55 |
| 4 | 1265 |
| 5 | 11255 |
| 6 | 59455 |
| 7 | 123805 |
| 8 | 395755 |
| 9 | 635255 |
| 10 | 874115 |
| 11 | 1028555 |
| 12 | 1456015 |
| 13 | 2847515 |
| 14 | 3201715 |
| 15 | 3841805 |
| 16 | 4353305 |
| 17 | 6655055 |
| 18 | 6987805 |
| 19 | 13443155 |
| 20 | 16825765 |
| 21 | 23656765 |
| 22 | 36370015 |
| 23 | 41083405 |
| 24 | 66919765 |
| 25 | 68432705 |
| 26 | 100126015 |
| 27 | 123012395 |