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 | 1 |
| 2 | 34 |
| 3 | 342 |
| 4 | 2192 |
| 5 | 11000 |
| 6 | 47232 |
| 7 | 181888 |
| 8 | 646144 |
| 9 | 2156544 |
| 10 | 6848000 |
| 11 | 20877824 |
| 12 | 61526016 |
| 13 | 176171008 |
| 14 | 492126208 |
| 15 | 1345536000 |
| 16 | 3610247168 |
| 17 | 9526771712 |
| 18 | 24769069056 |
| 19 | 63546720256 |
| 20 | 161087488000 |
| 21 | 403925630976 |
| 22 | 1002841309184 |
| 23 | 2467290939392 |
| 24 | 6019866427392 |
| 25 | 14575206400000 |
| 26 | 35039249170432 |