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 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 1 |
| 9 | 5 |
| 10 | 22 |
| 11 | 74 |
| 12 | 219 |
| 13 | 576 |
| 14 | 1394 |
| 15 | 3150 |
| 16 | 6733 |
| 17 | 13744 |
| 18 | 26969 |
| 19 | 51185 |
| 20 | 94323 |
| 21 | 169453 |
| 22 | 297533 |
| 23 | 512006 |
| 24 | 865050 |
| 25 | 1437739 |
| 26 | 2353756 |
| 27 | 3801041 |
| 28 | 6060918 |
| 29 | 9552826 |
| 30 | 14894428 |
| 31 | 22991659 |
| 32 | 35159606 |
| 33 | 53299703 |
| 34 | 80137271 |
| 35 | 119563216 |
| 36 | 177091225 |
| 37 | 260504790 |
| 38 | 380720841 |