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 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 6 |
| 6 | 6 |
| 7 | 18 |
| 8 | 16 |
| 9 | 48 |
| 10 | 60 |
| 11 | 176 |
| 12 | 144 |
| 13 | 630 |
| 14 | 756 |
| 15 | 1800 |
| 16 | 2048 |
| 17 | 7710 |
| 18 | 7776 |
| 19 | 27594 |
| 20 | 24000 |
| 21 | 84672 |
| 22 | 120032 |
| 23 | 356960 |
| 24 | 276480 |
| 25 | 1296000 |
| 26 | 1719900 |
| 27 | 4202496 |
| 28 | 4741632 |
| 29 | 18407808 |
| 30 | 17820000 |
| 31 | 69273666 |
| 32 | 67108864 |
| 33 | 211016256 |
| 34 | 336849900 |
| 35 | 929275200 |
| 36 | 725594112 |
| 37 | 3697909056 |