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 | 37 |
| 2 | 59 |
| 3 | 149 |
| 4 | 389 |
| 5 | 809 |
| 6 | 2543 |
| 7 | 8089 |
| 8 | 25301 |
| 9 | 76493 |
| 10 | 232439 |
| 11 | 695407 |
| 12 | 2040551 |
| 13 | 5993249 |
| 14 | 17532407 |
| 15 | 50970511 |
| 16 | 147468721 |
| 17 | 424835869 |
| 18 | 1219642051 |