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 | 252 |
| 2 | 504 |
| 3 | 756 |
| 4 | 1008 |
| 5 | 1260 |
| 6 | 1512 |
| 7 | 1764 |
| 8 | 2016 |
| 9 | 2268 |
| 10 | 2520 |
| 11 | 2772 |
| 12 | 3024 |
| 13 | 3276 |
| 14 | 3528 |
| 15 | 3780 |
| 16 | 4032 |
| 17 | 4284 |
| 18 | 4536 |
| 19 | 4788 |
| 20 | 5040 |
| 21 | 5292 |
| 22 | 5544 |
| 23 | 5796 |
| 24 | 6048 |
| 25 | 6300 |
| 26 | 6552 |
| 27 | 6804 |
| 28 | 7056 |
| 29 | 7308 |
| 30 | 7560 |
| 31 | 7812 |
| 32 | 8064 |
| 33 | 8316 |
| 34 | 8568 |
| 35 | 8820 |
| 36 | 9072 |
| 37 | 9324 |
| 38 | 9576 |
| 39 | 9828 |
| 40 | 10080 |
| 41 | 10332 |
| 42 | 10584 |
| 43 | 10836 |
| 44 | 11088 |
| 45 | 11340 |