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 | 16 |
| 2 | 156 |
| 3 | 1546 |
| 4 | 15936 |
| 5 | 168826 |
| 6 | 1818216 |
| 7 | 19767106 |
| 8 | 216038496 |
| 9 | 2368025386 |
| 10 | 25997890776 |
| 11 | 285674467666 |
| 12 | 3140605159056 |
| 13 | 34535772837946 |
| 14 | 379828197747336 |
| 15 | 4177718354400226 |
| 16 | 45952550973479616 |
| 17 | 505463955158738506 |