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 | 540 |
| 1 | 2100 |
| 2 | 5460 |
| 3 | 11340 |
| 4 | 20460 |
| 5 | 33540 |
| 6 | 51300 |
| 7 | 74460 |
| 8 | 103740 |
| 9 | 139860 |
| 10 | 183540 |
| 11 | 235500 |
| 12 | 296460 |
| 13 | 367140 |
| 14 | 448260 |
| 15 | 540540 |
| 16 | 644700 |
| 17 | 761460 |
| 18 | 891540 |
| 19 | 1035660 |
| 20 | 1194540 |
| 21 | 1368900 |
| 22 | 1559460 |
| 23 | 1766940 |
| 24 | 1992060 |
| 25 | 2235540 |
| 26 | 2498100 |
| 27 | 2780460 |
| 28 | 3083340 |