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 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 6 |
| 5 | 14 |
| 6 | 24 |
| 7 | 54 |
| 8 | 120 |
| 9 | 145 |
| 10 | 264 |
| 11 | 411 |
| 12 | 464 |
| 13 | 720 |
| 14 | 842 |
| 15 | 1560 |
| 16 | 2042 |
| 17 | 2408 |
| 18 | 2670 |
| 19 | 5040 |
| 20 | 5766 |
| 21 | 10800 |
| 22 | 13686 |
| 23 | 16590 |
| 24 | 18144 |
| 25 | 40320 |
| 26 | 45384 |
| 27 | 85680 |
| 28 | 105864 |
| 29 | 106153 |
| 30 | 131184 |
| 31 | 141960 |
| 32 | 145728 |