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) |
|---|---|
| 3 | 1 |
| 4 | 3 |
| 5 | 6 |
| 6 | 13 |
| 7 | 27 |
| 8 | 63 |
| 9 | 148 |
| 10 | 363 |
| 11 | 912 |
| 12 | 2330 |
| 13 | 6036 |
| 14 | 15825 |
| 15 | 41865 |
| 16 | 111636 |
| 17 | 299736 |
| 18 | 809513 |
| 19 | 2197728 |
| 20 | 5994219 |
| 21 | 16416748 |
| 22 | 45129396 |
| 23 | 124479270 |
| 24 | 344403494 |
| 25 | 955557780 |
| 26 | 2658061560 |
| 27 | 7411457963 |
| 28 | 20710700277 |
| 29 | 57992124810 |
| 30 | 162691293718 |
| 31 | 457219737027 |
| 32 | 1287065977413 |