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 | 0 |
| 1 | 4 |
| 2 | 24 |
| 3 | 96 |
| 4 | 280 |
| 5 | 660 |
| 6 | 1344 |
| 7 | 2464 |
| 8 | 4176 |
| 9 | 6660 |
| 10 | 10120 |
| 11 | 14784 |
| 12 | 20904 |
| 13 | 28756 |
| 14 | 38640 |
| 15 | 50880 |
| 16 | 65824 |
| 17 | 83844 |
| 18 | 105336 |
| 19 | 130720 |
| 20 | 160440 |
| 21 | 194964 |
| 22 | 234784 |
| 23 | 280416 |
| 24 | 332400 |
| 25 | 391300 |
| 26 | 457704 |
| 27 | 532224 |
| 28 | 615496 |
| 29 | 708180 |
| 30 | 810960 |
| 31 | 924544 |
| 32 | 1049664 |