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 | 2 |
| 2 | 22 |
| 3 | 98 |
| 4 | 838 |
| 5 | 3722 |
| 6 | 31822 |
| 7 | 141338 |
| 8 | 1208398 |
| 9 | 5367122 |
| 10 | 45887302 |
| 11 | 203809298 |
| 12 | 1742509078 |
| 13 | 7739386202 |
| 14 | 66169457662 |
| 15 | 293892866378 |
| 16 | 2512696882078 |
| 17 | 11160189536162 |
| 18 | 95416312061302 |
| 19 | 423793309507778 |
| 20 | 3623307161447398 |
| 21 | 16092985571759402 |
| 22 | 137590255822939822 |