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 | 25 |
| 3 | 59 |
| 4 | 2599 |
| 5 | 6195 |
| 6 | 421407 |
| 7 | 11651191 |
| 8 | 19293221 |
| 9 | 255136097 |
| 10 | 1820015683 |
| 11 | 2183556659 |
| 12 | 7993872143 |
| 13 | 9850779563 |
| 14 | 2006892138335 |
| 15 | 2649677145789 |
| 16 | 6645858099781 |
| 17 | 318039538085101 |
| 18 | 414996765110825 |