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 | 30 |
| 2 | 120 |
| 3 | 270 |
| 4 | 480 |
| 5 | 750 |
| 6 | 1080 |
| 7 | 1470 |
| 8 | 1920 |
| 9 | 2430 |
| 10 | 3000 |
| 11 | 3630 |
| 12 | 4320 |
| 13 | 5070 |
| 14 | 5880 |
| 15 | 6750 |
| 16 | 7680 |
| 17 | 8670 |
| 18 | 9720 |
| 19 | 10830 |
| 20 | 12000 |
| 21 | 13230 |
| 22 | 14520 |
| 23 | 15870 |
| 24 | 17280 |
| 25 | 18750 |
| 26 | 20280 |
| 27 | 21870 |
| 28 | 23520 |
| 29 | 25230 |
| 30 | 27000 |
| 31 | 28830 |
| 32 | 30720 |
| 33 | 32670 |
| 34 | 34680 |
| 35 | 36750 |
| 36 | 38880 |
| 37 | 41070 |
| 38 | 43320 |
| 39 | 45630 |
| 40 | 48000 |
| 41 | 50430 |