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) |
|---|---|
| 1 | 10 |
| 2 | 100 |
| 3 | 788 |
| 4 | 5880 |
| 5 | 45064 |
| 6 | 349280 |
| 7 | 2710892 |
| 8 | 21021916 |
| 9 | 163012744 |
| 10 | 1264202660 |
| 11 | 9804721360 |
| 12 | 76042111360 |
| 13 | 589756075600 |
| 14 | 4573942739248 |
| 15 | 35473931052816 |
| 16 | 275123688202096 |
| 17 | 2133765358334352 |
| 18 | 16548755248130912 |
| 19 | 128346493442546640 |