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 | 1 |
| 4 | 4 |
| 5 | 6 |
| 6 | 1 |
| 7 | 14 |
| 8 | 32 |
| 9 | 18 |
| 10 | 72 |
| 11 | 90 |
| 12 | 13 |
| 13 | 234 |
| 14 | 420 |
| 15 | 372 |
| 16 | 1536 |
| 17 | 1598 |
| 18 | 360 |
| 19 | 4332 |
| 20 | 12096 |
| 21 | 5908 |
| 22 | 18000 |
| 23 | 28658 |
| 24 | 2496 |
| 25 | 93062 |
| 26 | 122148 |
| 27 | 106920 |
| 28 | 473760 |
| 29 | 514230 |
| 30 | 142848 |
| 31 | 1349244 |
| 32 | 3391488 |
| 33 | 1782180 |
| 34 | 5708056 |
| 35 | 11924808 |
| 36 | 1555200 |
| 37 | 24664200 |
| 38 | 40504200 |
| 39 | 31758948 |
| 40 | 209212416 |