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 | 1 |
| 2 | 13 |
| 3 | 18 |
| 4 | 58 |
| 5 | 586 |
| 6 | 1258 |
| 7 | 58613 |
| 8 | 1350538 |
| 9 | 1414213 |
| 10 | 59517693 |
| 11 | 1398413386 |
| 12 | 5996665693 |
| 13 | 119976657489461 |