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 | 2 |
| 2 | 3 |
| 3 | 10 |
| 4 | 21 |
| 5 | 66 |
| 6 | 117 |
| 7 | 289 |
| 8 | 437 |
| 9 | 920 |
| 10 | 2523 |
| 11 | 3441 |
| 12 | 8103 |
| 13 | 13776 |
| 14 | 17759 |
| 15 | 28858 |
| 16 | 57399 |
| 17 | 109150 |
| 18 | 134078 |
| 19 | 243210 |
| 20 | 355497 |
| 21 | 427853 |
| 22 | 733278 |
| 23 | 1036504 |
| 24 | 1711648 |
| 25 | 3243583 |
| 26 | 4414609 |
| 27 | 5136713 |
| 28 | 6919797 |
| 29 | 8012154 |
| 30 | 10692625 |
| 31 | 28100655 |
| 32 | 36616596 |
| 33 | 54001290 |