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 | 0 |
| 2 | 52 |
| 3 | 550 |
| 4 | 8544 |
| 5 | 119506 |
| 6 | 1729212 |
| 7 | 25450414 |
| 8 | 379892924 |
| 9 | 5724356600 |
| 10 | 86870686676 |
| 11 | 1325147534394 |
| 12 | 20298649626624 |
| 13 | 312012262489322 |
| 14 | 4809932665481580 |
| 15 | 74334215199171600 |
| 16 | 1151283153187656576 |
| 17 | 17865166558629037394 |