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 | 7 |
| 2 | 97 |
| 3 | 1777 |
| 4 | 36427 |
| 5 | 793183 |
| 6 | 17946319 |
| 7 | 417019279 |
| 8 | 9882531049 |
| 9 | 237755962549 |
| 10 | 5788752753889 |
| 11 | 142315748216929 |
| 12 | 3527047510738129 |
| 13 | 88005145583604529 |
| 14 | 2208577811494332529 |
| 15 | 55703557596868964209 |
| 16 | 1411049022002884046539 |