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 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 7 |
| 5 | 8 |
| 6 | 19 |
| 7 | 34 |
| 8 | 103 |
| 9 | 121 |
| 10 | 341 |
| 11 | 606 |
| 12 | 1809 |
| 13 | 2155 |
| 14 | 6336 |
| 15 | 11306 |
| 16 | 33899 |
| 17 | 40717 |
| 18 | 121483 |
| 19 | 217666 |
| 20 | 656199 |
| 21 | 792351 |
| 22 | 2381512 |
| 23 | 4280046 |
| 24 | 12957809 |
| 25 | 15703156 |
| 26 | 47419503 |
| 27 | 85410872 |
| 28 | 259395664 |
| 29 | 315180458 |
| 30 | 954961034 |
| 31 | 1722900242 |
| 32 | 5245001951 |