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 | 2 |
| 3 | 1 |
| 4 | 3 |
| 5 | 7 |
| 6 | 6 |
| 7 | 20 |
| 8 | 52 |
| 9 | 6 |
| 10 | 26 |
| 11 | 104 |
| 12 | 32 |
| 13 | 162 |
| 14 | 460 |
| 15 | 356 |
| 16 | 1438 |
| 17 | 4048 |
| 18 | 712 |
| 19 | 3588 |
| 20 | 15272 |
| 21 | 5012 |
| 22 | 27460 |
| 23 | 90476 |
| 24 | 64944 |
| 25 | 300816 |
| 26 | 912472 |
| 27 | 90476 |
| 28 | 155420 |
| 29 | 611656 |
| 30 | 1067892 |
| 31 | 1770024 |
| 32 | 4763360 |
| 33 | 4151704 |
| 34 | 14746316 |
| 35 | 39566064 |
| 36 | 8915064 |
| 37 | 27813084 |
| 38 | 109938548 |
| 39 | 76294212 |
| 40 | 222960908 |