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) |
|---|---|
| 0 | 1 |
| 1 | 27 |
| 2 | 432 |
| 3 | 5193 |
| 4 | 51624 |
| 5 | 446094 |
| 6 | 3454767 |
| 7 | 24472584 |
| 8 | 160883037 |
| 9 | 992189253 |
| 10 | 5788156617 |
| 11 | 32151489435 |
| 12 | 170956128834 |
| 13 | 873959259258 |
| 14 | 4311311541669 |
| 15 | 20586621297483 |
| 16 | 95404964600448 |
| 17 | 430094901683700 |