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 | -8 |
| 2 | -16 |
| 3 | 3816 |
| 4 | 23008 |
| 5 | 80600 |
| 6 | 214992 |
| 7 | 483784 |
| 8 | 967616 |
| 9 | 1774008 |
| 10 | 3041200 |
| 11 | 4941992 |
| 12 | 7687584 |
| 13 | 11531416 |
| 14 | 16773008 |
| 15 | 23761800 |
| 16 | 32900992 |
| 17 | 44651384 |
| 18 | 59535216 |
| 19 | 78140008 |
| 20 | 101122400 |
| 21 | 129211992 |
| 22 | 163215184 |
| 23 | 204019016 |
| 24 | 252595008 |
| 25 | 310003000 |
| 26 | 377394992 |
| 27 | 456018984 |