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 | 568 |
| 2 | 10384 |
| 3 | 140816 |
| 4 | 2171152 |
| 5 | 31817360 |
| 6 | 476660624 |
| 7 | 7079094288 |
| 8 | 105530924944 |
| 9 | 1570852959248 |
| 10 | 23397537190544 |
| 11 | 348412932162320 |
| 12 | 5188788920597392 |
| 13 | 77271414617633808 |
| 14 | 1150747018045489296 |
| 15 | 17137111768900018448 |