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 | 8 |
| 2 | 73 |
| 3 | 702 |
| 4 | 6497 |
| 5 | 58924 |
| 6 | 531225 |
| 7 | 4782626 |
| 8 | 43046209 |
| 9 | 387419760 |
| 10 | 3486783401 |
| 11 | 31381058278 |
| 12 | 282429534753 |
| 13 | 2541865826132 |
| 14 | 22876792452217 |
| 15 | 205891132091274 |
| 16 | 1853020188847745 |
| 17 | 16677181699661656 |
| 18 | 150094635296993289 |