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) |
|---|---|
| 9 | 1 |
| 10 | 0 |
| 11 | 1 |
| 12 | 30 |
| 13 | 0 |
| 14 | 148 |
| 15 | 8 |
| 16 | 78 |
| 17 | 9309 |
| 18 | 612 |
| 19 | 62749 |
| 20 | 44202 |
| 21 | 42049 |
| 22 | 2916485 |
| 23 | 147192 |
| 24 | 18284136 |
| 25 | 13311268 |
| 26 | 13008389 |
| 27 | 973107552 |
| 28 | 51147756 |
| 29 | 6190192748 |
| 30 | 4557702762 |
| 31 | 4311375354 |
| 32 | 316985255470 |
| 33 | 16552301184 |
| 34 | 2015267424300 |
| 35 | 1495135512514 |
| 36 | 1417634375316 |
| 37 | 104324890543686 |
| 38 | 5459334927260 |
| 39 | 663068761241948 |