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 | 60 |
| 2 | 140 |
| 3 | 420 |
| 4 | 660 |
| 5 | 1224 |
| 6 | 1820 |
| 7 | 2660 |
| 8 | 2820 |
| 9 | 4620 |
| 10 | 5460 |
| 11 | 7140 |
| 12 | 7980 |
| 13 | 8580 |
| 14 | 9660 |
| 15 | 11220 |
| 16 | 12180 |
| 17 | 12540 |
| 18 | 13020 |
| 19 | 13260 |
| 20 | 13580 |
| 21 | 13860 |
| 22 | 14140 |
| 23 | 14420 |
| 24 | 14820 |
| 25 | 15180 |
| 26 | 15540 |
| 27 | 16380 |
| 28 | 17220 |
| 29 | 17940 |
| 30 | 18060 |
| 31 | 18200 |
| 32 | 19140 |
| 33 | 19380 |
| 34 | 19740 |
| 35 | 20020 |
| 36 | 20460 |
| 37 | 22260 |
| 38 | 22620 |
| 39 | 23460 |
| 40 | 24180 |
| 41 | 24420 |