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 | 9 |
| 2 | 132 |
| 3 | 902 |
| 4 | 8470 |
| 5 | 77426 |
| 6 | 676269 |
| 7 | 6069953 |
| 8 | 54182821 |
| 9 | 482859661 |
| 10 | 4309680012 |
| 11 | 38447587452 |
| 12 | 343001529054 |
| 13 | 3060175277029 |
| 14 | 27301498644398 |
| 15 | 243572477909485 |
| 16 | 2173052663274029 |
| 17 | 19387068214074941 |
| 18 | 172963318405155953 |