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 | 5 |
| 2 | 36 |
| 3 | 80 |
| 4 | 224 |
| 5 | 528 |
| 6 | 1216 |
| 7 | 2816 |
| 8 | 6544 |
| 9 | 15216 |
| 10 | 35376 |
| 11 | 82240 |
| 12 | 191184 |
| 13 | 444448 |
| 14 | 1033216 |
| 15 | 2401936 |
| 16 | 5583824 |
| 17 | 12980816 |
| 18 | 30176736 |
| 19 | 70152400 |
| 20 | 163084544 |
| 21 | 379125568 |
| 22 | 881360016 |
| 23 | 2048913456 |
| 24 | 4763145904 |
| 25 | 11072970816 |
| 26 | 25741534096 |
| 27 | 59841806560 |