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 | 3 |
| 2 | 6 |
| 3 | 12 |
| 4 | 24 |
| 5 | 36 |
| 6 | 48 |
| 7 | 72 |
| 8 | 144 |
| 9 | 168 |
| 10 | 288 |
| 11 | 336 |
| 12 | 420 |
| 13 | 840 |
| 14 | 1680 |
| 15 | 3360 |
| 16 | 6720 |
| 17 | 7560 |
| 18 | 15120 |
| 19 | 30240 |
| 20 | 60480 |
| 21 | 95760 |
| 22 | 120960 |
| 23 | 176400 |
| 24 | 191520 |
| 25 | 257040 |
| 26 | 352800 |
| 27 | 383040 |
| 28 | 514080 |
| 29 | 1028160 |
| 30 | 1681680 |
| 31 | 2056320 |
| 32 | 2998800 |
| 33 | 3112200 |
| 34 | 5525520 |
| 35 | 5997600 |
| 36 | 6224400 |
| 37 | 8353800 |
| 38 | 12448800 |
| 39 | 16216200 |