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 | 3 |
| 2 | 42 |
| 3 | 75 |
| 4 | 151 |
| 5 | 2730 |
| 6 | 7281 |
| 7 | 14563 |
| 8 | 174762 |
| 9 | 184111 |
| 10 | 932067 |
| 11 | 11184810 |
| 12 | 13256071 |
| 13 | 26512143 |
| 14 | 715827882 |
| 15 | 1908874353 |