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 | 2 |
| 2 | 14 |
| 3 | 44 |
| 4 | 104 |
| 5 | 2511 |
| 6 | 735 |
| 7 | 29888 |
| 8 | 2295 |
| 9 | 6075 |
| 10 | 5264 |
| 11 | 2200933376 |
| 12 | 5984 |
| 13 | 689278976 |
| 14 | 156735 |
| 15 | 180224 |
| 16 | 21735 |
| 17 | 2035980763136 |
| 18 | 223244 |
| 19 | 9399153082499072 |
| 20 | 458864 |
| 21 | 41680575 |
| 22 | 701443071 |
| 23 | 2503092614937444351 |
| 24 | 201824 |
| 25 | 2707370000 |
| 26 | 29785673727 |
| 27 | 46977524 |
| 28 | 5475519 |
| 29 | 1737797404898095794225152 |