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 | 840 |
| 2 | 1680 |
| 3 | 2520 |
| 4 | 3360 |
| 5 | 4200 |
| 6 | 5040 |
| 7 | 5880 |
| 8 | 6720 |
| 9 | 7560 |
| 10 | 8400 |
| 11 | 9240 |
| 12 | 10080 |
| 13 | 10920 |
| 14 | 11760 |
| 15 | 12600 |
| 16 | 13440 |
| 17 | 14280 |
| 18 | 15120 |
| 19 | 15960 |
| 20 | 16800 |
| 21 | 17640 |
| 22 | 18480 |
| 23 | 19320 |
| 24 | 20160 |
| 25 | 21000 |
| 26 | 21840 |
| 27 | 22680 |
| 28 | 23520 |
| 29 | 24360 |
| 30 | 25200 |
| 31 | 26040 |
| 32 | 26880 |
| 33 | 27720 |
| 34 | 28560 |
| 35 | 29400 |
| 36 | 30240 |
| 37 | 31080 |
| 38 | 31920 |