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 | 14 |
| 2 | 133 |
| 3 | 994 |
| 4 | 6384 |
| 5 | 36568 |
| 6 | 191793 |
| 7 | 935902 |
| 8 | 4300611 |
| 9 | 18770612 |
| 10 | 78347759 |
| 11 | 314391168 |
| 12 | 1218102389 |
| 13 | 4572965754 |
| 14 | 16683909711 |
| 15 | 59301765852 |
| 16 | 205796230227 |
| 17 | 698570164180 |
| 18 | 2323198273151 |
| 19 | 7580214724124 |