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) |
|---|---|
| 0 | 1 |
| 1 | 8 |
| 2 | 104 |
| 3 | 1472 |
| 4 | 21856 |
| 5 | 333568 |
| 6 | 5183744 |
| 7 | 81590272 |
| 8 | 1296426496 |
| 9 | 20750839808 |
| 10 | 334081306624 |
| 11 | 5404163080192 |
| 12 | 87763693060096 |
| 13 | 1430025994108928 |
| 14 | 23367175920287744 |
| 15 | 382767375745810432 |
| 16 | 6283401962864377856 |