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 | 106 |
| 3 | 134 |
| 4 | 2954 |
| 5 | 12473 |
| 6 | 120114 |
| 7 | 677505 |
| 8 | 4749950 |
| 9 | 28200435 |
| 10 | 177863786 |
| 11 | 1063874048 |
| 12 | 6491819162 |
| 13 | 38892883673 |
| 14 | 234724691398 |
| 15 | 1407192408230 |
| 16 | 8460554956974 |
| 17 | 50741165814612 |
| 18 | 304671802762820 |
| 19 | 1827631230875303 |