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 | 1 |
| 1 | 4 |
| 2 | 34 |
| 3 | 410 |
| 4 | 6170 |
| 5 | 109506 |
| 6 | 2227882 |
| 7 | 50987378 |
| 8 | 1293386410 |
| 9 | 35933906946 |
| 10 | 1083069266634 |
| 11 | 35146231883122 |
| 12 | 1220316225699786 |
| 13 | 45099576850647106 |
| 14 | 1766204747811044266 |
| 15 | 73012853049788936050 |
| 16 | 3175271515525778312810 |