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 | 584 |
| 5 | 6952 |
| 6 | 29500 |
| 7 | 79088 |
| 8 | 162320 |
| 9 | 281320 |
| 10 | 435436 |
| 11 | 623508 |
| 12 | 845084 |
| 13 | 1100164 |
| 14 | 1388748 |
| 15 | 1710836 |
| 16 | 2066428 |
| 17 | 2455524 |
| 18 | 2878124 |
| 19 | 3334228 |
| 20 | 3823836 |
| 21 | 4346948 |
| 22 | 4903564 |
| 23 | 5493684 |
| 24 | 6117308 |
| 25 | 6774436 |
| 26 | 7465068 |
| 27 | 8189204 |
| 28 | 8946844 |
| 29 | 9737988 |
| 30 | 10562636 |