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 | 5 |
| 2 | 19 |
| 3 | 101 |
| 4 | 619 |
| 5 | 4421 |
| 6 | 35899 |
| 7 | 3301819 |
| 8 | 1226280710981 |
| 9 | 115578717622022981 |
| 10 | 32656499591185747972776747396512425885838364422981 |