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 | 6 |
| 2 | 37 |
| 3 | 236 |
| 4 | 1569 |
| 5 | 10970 |
| 6 | 81445 |
| 7 | 648240 |
| 8 | 5576545 |
| 9 | 52142030 |
| 10 | 531185925 |
| 11 | 5891873300 |
| 12 | 70946620225 |
| 13 | 923526766050 |
| 14 | 12935478240325 |
| 15 | 194062691183000 |
| 16 | 3105155646818625 |
| 17 | 52788408935369750 |
| 18 | 950195175533921125 |