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 | 13 |
| 3 | 793 |
| 4 | 1943 |
| 5 | 150341 |
| 6 | 183793 |
| 7 | 2348789 |
| 8 | 26052527 |
| 9 | 27982637 |
| 10 | 54789869 |
| 11 | 1588344433 |
| 12 | 3928538029 |
| 13 | 8115802931 |
| 14 | 16936276919 |
| 15 | 17786709541 |
| 16 | 47778790033 |
| 17 | 973094452518029 |