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 | 9 |
| 2 | 162 |
| 3 | 3645 |
| 4 | 91854 |
| 5 | 2480058 |
| 6 | 70150212 |
| 7 | 2051893701 |
| 8 | 61556811030 |
| 9 | 1883638417518 |
| 10 | 58564030799196 |
| 11 | 1844766970174674 |
| 12 | 58748732742485772 |
| 13 | 1888352123865614100 |
| 14 | 61182608813245896840 |
| 15 | 1996082612532147384405 |
| 16 | 65518476340761072970470 |
| 17 | 2162109719245115408025510 |