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 | 4 |
| 2 | 29 |
| 3 | 256 |
| 4 | 2592 |
| 5 | 28160 |
| 6 | 322873 |
| 7 | 3850352 |
| 8 | 47369432 |
| 9 | 597565304 |
| 10 | 7695966346 |
| 11 | 100852014156 |
| 12 | 1341310032320 |
| 13 | 18067954497864 |
| 14 | 246098396499471 |
| 15 | 3384883529933828 |
| 16 | 46960152641672616 |
| 17 | 656538880287562528 |