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 | 97 |
| 2 | 4656 |
| 3 | 147440 |
| 4 | 3464840 |
| 5 | 64446024 |
| 6 | 988172368 |
| 7 | 12846240784 |
| 8 | 144520208820 |
| 9 | 1429144287220 |
| 10 | 12576469727536 |
| 11 | 99468442390512 |
| 12 | 712857170465336 |
| 13 | 4660989191504120 |
| 14 | 27965935149024720 |
| 15 | 154744841157936784 |
| 16 | 793067310934426018 |
| 17 | 3778732481511088674 |