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 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 7 |
| 6 | 6 |
| 7 | 30 |
| 8 | 43 |
| 9 | 111 |
| 10 | 184 |
| 11 | 553 |
| 12 | 694 |
| 13 | 2098 |
| 14 | 3576 |
| 15 | 8186 |
| 16 | 13689 |
| 17 | 35791 |
| 18 | 54928 |
| 19 | 141366 |
| 20 | 239002 |
| 21 | 548162 |
| 22 | 956743 |
| 23 | 2328296 |
| 24 | 3754337 |
| 25 | 9133084 |
| 26 | 15963906 |
| 27 | 36115030 |
| 28 | 63177196 |
| 29 | 148953028 |
| 30 | 251144293 |
| 31 | 590484909 |
| 32 | 1038294564 |
| 33 | 2335617735 |
| 34 | 4138282064 |
| 35 | 9539100013 |
| 36 | 16441453580 |
| 37 | 37863251785 |