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 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 12 |
| 6 | 24 |
| 7 | 72 |
| 8 | 66 |
| 9 | 666 |
| 10 | 132 |
| 11 | 1332 |
| 12 | 264 |
| 13 | 2664 |
| 14 | 792 |
| 15 | 13320 |
| 16 | 3960 |
| 17 | 14652 |
| 18 | 26664 |
| 19 | 48840 |
| 20 | 29304 |
| 21 | 79992 |
| 22 | 341880 |
| 23 | 146520 |
| 24 | 399960 |
| 25 | 1333332 |
| 26 | 1025640 |
| 27 | 2799720 |
| 28 | 8879112 |
| 29 | 2666664 |
| 30 | 18666648 |
| 31 | 7999992 |
| 32 | 44395560 |
| 33 | 13333320 |
| 34 | 93333240 |
| 35 | 39999960 |
| 36 | 279999720 |
| 37 | 269333064 |