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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2896 |
| 3 | 306827 |
| 4 | 8388608 |
| 5 | 109183006 |
| 6 | 888667667 |
| 7 | 5231514822 |
| 8 | 24296003999 |
| 9 | 94143178827 |
| 10 | 316227766016 |
| 11 | 946271759726 |
| 12 | 2573856496961 |
| 13 | 6461726194556 |
| 14 | 15152085430295 |
| 15 | 33500360392119 |
| 16 | 70368744177664 |
| 17 | 141306648466586 |