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 | 2 |
| 2 | 8 |
| 3 | 26 |
| 4 | 196 |
| 5 | 692 |
| 6 | 5774 |
| 7 | 21142 |
| 8 | 180772 |
| 9 | 675344 |
| 10 | 5837908 |
| 11 | 22087716 |
| 12 | 192239854 |
| 13 | 733698032 |
| 14 | 6416509142 |
| 15 | 24645099530 |
| 16 | 216309089956 |
| 17 | 834847581048 |
| 18 | 7347943049432 |
| 19 | 28467646552432 |
| 20 | 251119894730596 |
| 21 | 975892708569952 |
| 22 | 8624336421678788 |
| 23 | 33600628889991916 |
| 24 | 297394187356638766 |