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 | 34 |
| 2 | 697 |
| 3 | 14925 |
| 4 | 318732 |
| 5 | 6814290 |
| 6 | 145764780 |
| 7 | 3118943536 |
| 8 | 66743533552 |
| 9 | 1428321913952 |
| 10 | 30566631602016 |
| 11 | 654139520133696 |
| 12 | 13998888884058752 |
| 13 | 299582781445141504 |
| 14 | 6411212320129846144 |
| 15 | 137202959280321342208 |