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 | 6 |
| 3 | 13 |
| 4 | 17 |
| 5 | 5513 |
| 6 | 12746 |
| 7 | 126237 |
| 8 | 430116 |
| 9 | 477190 |
| 10 | 1295623 |
| 11 | 1319307 |
| 12 | 3596185 |
| 13 | 6109350 |