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 | 9 |
| 3 | 12 |
| 4 | 96 |
| 5 | 345 |
| 6 | 432 |
| 7 | 852 |
| 8 | 945 |
| 9 | 1452 |
| 10 | 2160 |
| 11 | 3480 |
| 12 | 3753 |
| 13 | 4800 |
| 14 | 6561 |
| 15 | 6984 |
| 16 | 13230 |
| 17 | 15840 |
| 18 | 17040 |
| 19 | 30210 |
| 20 | 31008 |
| 21 | 40320 |
| 22 | 43776 |
| 23 | 44352 |
| 24 | 44652 |
| 25 | 47628 |
| 26 | 55200 |
| 27 | 56940 |
| 28 | 60420 |
| 29 | 61065 |
| 30 | 69312 |
| 31 | 71145 |
| 32 | 74100 |
| 33 | 77400 |
| 34 | 81504 |
| 35 | 125580 |
| 36 | 128016 |
| 37 | 175952 |
| 38 | 192240 |
| 39 | 198168 |