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 | 1 |
| 2 | 2 |
| 3 | 7 |
| 4 | 33 |
| 5 | 81 |
| 6 | 74395 |
| 7 | 8369196 |
| 8 | 215802898 |
| 9 | 414859094165 |
| 10 | 520973680640109 |
| 11 | 4064761999842441067 |
| 12 | 517978450857911919447 |
| 13 | 4255027826896017770661 |
| 14 | 5222501054779098990032001033 |
| 15 | 718000720375918750838217734094612383 |