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 | 42 |
| 2 | 1764 |
| 3 | 6216 |
| 4 | 13860 |
| 5 | 25200 |
| 6 | 40740 |
| 7 | 60984 |
| 8 | 86436 |
| 9 | 117600 |
| 10 | 154980 |
| 11 | 199080 |
| 12 | 250404 |
| 13 | 309456 |
| 14 | 376740 |
| 15 | 452760 |
| 16 | 538020 |
| 17 | 633024 |
| 18 | 738276 |
| 19 | 854280 |
| 20 | 981540 |
| 21 | 1120560 |
| 22 | 1271844 |
| 23 | 1435896 |
| 24 | 1613220 |
| 25 | 1804320 |
| 26 | 2009700 |
| 27 | 2229864 |
| 28 | 2465316 |
| 29 | 2716560 |
| 30 | 2984100 |
| 31 | 3268440 |