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 | 16 |
| 2 | 164 |
| 3 | 2928 |
| 4 | 44366 |
| 5 | 969528 |
| 6 | 16895850 |
| 7 | 397550036 |
| 8 | 7576693894 |
| 9 | 184631622106 |
| 10 | 3777035543236 |
| 11 | 93707916130348 |
| 12 | 2028328695512904 |
| 13 | 50826307266520194 |