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 | 3 |
| 3 | 16 |
| 4 | 124 |
| 5 | 1308 |
| 6 | 17443 |
| 7 | 282349 |
| 8 | 5396178 |
| 9 | 119324602 |
| 10 | 3005520274 |
| 11 | 85152637884 |
| 12 | 2685936442822 |
| 13 | 93514176139534 |