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 | 30 |
| 8 | 120 |
| 9 | 294 |
| 10 | 552 |
| 11 | 894 |
| 12 | 1320 |
| 13 | 1830 |
| 14 | 2424 |
| 15 | 3102 |
| 16 | 3864 |
| 17 | 4710 |
| 18 | 5640 |
| 19 | 6654 |
| 20 | 7752 |
| 21 | 8934 |
| 22 | 10200 |
| 23 | 11550 |
| 24 | 12984 |
| 25 | 14502 |
| 26 | 16104 |
| 27 | 17790 |
| 28 | 19560 |
| 29 | 21414 |
| 30 | 23352 |
| 31 | 25374 |
| 32 | 27480 |
| 33 | 29670 |
| 34 | 31944 |
| 35 | 34302 |
| 36 | 36744 |
| 37 | 39270 |
| 38 | 41880 |
| 39 | 44574 |
| 40 | 47352 |
| 41 | 50214 |
| 42 | 53160 |
| 43 | 56190 |
| 44 | 59304 |
| 45 | 62502 |