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 | 0 |
| 2 | 128 |
| 3 | 1116 |
| 4 | 4896 |
| 5 | 15200 |
| 6 | 38160 |
| 7 | 82908 |
| 8 | 162176 |
| 9 | 292896 |
| 10 | 496800 |
| 11 | 801020 |
| 12 | 1238688 |
| 13 | 1849536 |
| 14 | 2680496 |
| 15 | 3786300 |
| 16 | 5230080 |
| 17 | 7083968 |
| 18 | 9429696 |
| 19 | 12359196 |
| 20 | 15975200 |
| 21 | 20391840 |
| 22 | 25735248 |
| 23 | 32144156 |
| 24 | 39770496 |
| 25 | 48780000 |
| 26 | 59352800 |
| 27 | 71684028 |
| 28 | 85984416 |
| 29 | 102480896 |
| 30 | 121417200 |
| 31 | 143054460 |
| 32 | 167671808 |
| 33 | 195566976 |
| 34 | 227056896 |