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 | 540 |
| 2 | 1200 |
| 3 | 1620 |
| 4 | 3060 |
| 5 | 5580 |
| 6 | 9180 |
| 7 | 9900 |
| 8 | 12600 |
| 9 | 13440 |
| 10 | 13680 |
| 11 | 18300 |
| 12 | 19440 |
| 13 | 19800 |
| 14 | 21000 |
| 15 | 24480 |
| 16 | 36900 |
| 17 | 43200 |
| 18 | 49680 |
| 19 | 50220 |
| 20 | 54120 |
| 21 | 57240 |
| 22 | 61560 |
| 23 | 65880 |
| 24 | 81180 |
| 25 | 83700 |
| 26 | 103680 |
| 27 | 104160 |
| 28 | 154080 |
| 29 | 155520 |
| 30 | 156060 |
| 31 | 156240 |
| 32 | 202440 |
| 33 | 229320 |
| 34 | 252000 |
| 35 | 279000 |
| 36 | 298200 |
| 37 | 302940 |