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 | 30 |
| 2 | 60 |
| 3 | 180 |
| 4 | 210 |
| 5 | 360 |
| 6 | 420 |
| 7 | 840 |
| 8 | 900 |
| 9 | 1080 |
| 10 | 1260 |
| 11 | 1680 |
| 12 | 1800 |
| 13 | 2160 |
| 14 | 2310 |
| 15 | 2520 |
| 16 | 3360 |
| 17 | 3600 |
| 18 | 4620 |
| 19 | 5400 |
| 20 | 6300 |
| 21 | 6480 |
| 22 | 6720 |
| 23 | 7200 |
| 24 | 7560 |
| 25 | 9240 |
| 26 | 10800 |
| 27 | 12600 |
| 28 | 12960 |
| 29 | 13440 |
| 30 | 13860 |
| 31 | 15120 |
| 32 | 18480 |
| 33 | 21600 |
| 34 | 25200 |
| 35 | 26880 |
| 36 | 27000 |
| 37 | 27720 |
| 38 | 30030 |
| 39 | 32400 |
| 40 | 36960 |