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 | 2187 |
| 2 | 419904 |
| 3 | 9588028 |
| 4 | 86251004 |
| 5 | 495660330 |
| 6 | 2231009824 |
| 7 | 8684742989 |
| 8 | 30944246553 |
| 9 | 104711652679 |
| 10 | 344919346826 |
| 11 | 1122234055919 |
| 12 | 3627085766299 |
| 13 | 11631834618628 |
| 14 | 36830849015498 |
| 15 | 114465864361342 |
| 16 | 347386072561498 |