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 | 5 |
| 2 | 9 |
| 3 | 10 |
| 4 | 20 |
| 5 | 40 |
| 6 | 80 |
| 7 | 84 |
| 8 | 192 |
| 9 | 210 |
| 10 | 288 |
| 11 | 432 |
| 12 | 480 |
| 13 | 1200 |
| 14 | 1320 |
| 15 | 1800 |
| 16 | 2640 |
| 17 | 3600 |
| 18 | 3780 |
| 19 | 6480 |
| 20 | 7200 |
| 21 | 8400 |
| 22 | 10920 |
| 23 | 13860 |
| 24 | 21840 |
| 25 | 31680 |
| 26 | 32760 |
| 27 | 69300 |
| 28 | 73920 |
| 29 | 75600 |
| 30 | 100800 |
| 31 | 120120 |
| 32 | 138600 |
| 33 | 226800 |
| 34 | 240240 |
| 35 | 302400 |
| 36 | 388080 |
| 37 | 393120 |
| 38 | 771120 |
| 39 | 776160 |
| 40 | 942480 |
| 41 | 1310400 |