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 | 102 |
| 4 | 1792 |
| 5 | 11550 |
| 6 | 46848 |
| 7 | 144550 |
| 8 | 371712 |
| 9 | 838782 |
| 10 | 1715200 |
| 11 | 3247398 |
| 12 | 5779200 |
| 13 | 9774622 |
| 14 | 15843072 |
| 15 | 24766950 |
| 16 | 37531648 |
| 17 | 55357950 |
| 18 | 79736832 |
| 19 | 112466662 |
| 20 | 155692800 |
| 21 | 211949598 |
| 22 | 284204800 |
| 23 | 375906342 |
| 24 | 491031552 |
| 25 | 634138750 |
| 26 | 810421248 |