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 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 11 |
| 8 | 23 |
| 9 | 47 |
| 10 | 103 |
| 11 | 226 |
| 12 | 518 |
| 13 | 1200 |
| 14 | 2867 |
| 15 | 6946 |
| 16 | 17233 |
| 17 | 43385 |
| 18 | 111354 |
| 19 | 289861 |
| 20 | 766767 |
| 21 | 2054605 |
| 22 | 5579891 |
| 23 | 15325432 |
| 24 | 42559486 |
| 25 | 119312586 |
| 26 | 337469019 |
| 27 | 961850000 |
| 28 | 2760643085 |
| 29 | 7971239103 |
| 30 | 23140321458 |
| 31 | 67486362815 |
| 32 | 197615025815 |