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 | 65 |
| 3 | 648 |
| 4 | 6305 |
| 5 | 58424 |
| 6 | 530145 |
| 7 | 4780568 |
| 8 | 43042625 |
| 9 | 387413928 |
| 10 | 3486774401 |
| 11 | 31381044968 |
| 12 | 282429515745 |
| 13 | 2541865799768 |
| 14 | 22876792416545 |
| 15 | 205891132044024 |
| 16 | 1853020188786305 |
| 17 | 16677181699583048 |
| 18 | 150094635296894145 |