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 | 8 |
| 3 | 32 |
| 4 | 158 |
| 5 | 636 |
| 6 | 3000 |
| 7 | 11370 |
| 8 | 52166 |
| 9 | 194818 |
| 10 | 841122 |
| 11 | 3338446 |
| 12 | 18901856 |
| 13 | 57842348 |
| 14 | 378064896 |
| 15 | 1073497924 |
| 16 | 3840517750 |
| 17 | 15453709184 |
| 18 | 133757694784 |
| 19 | 361144763380 |
| 20 | 2500726090816 |
| 21 | 6776168788838 |
| 22 | 17399866594576 |
| 23 | 65044240487692 |