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 | 0 |
| 2 | 0 |
| 3 | 2240 |
| 4 | 22672 |
| 5 | 74072 |
| 6 | 156484 |
| 7 | 268048 |
| 8 | 408764 |
| 9 | 578632 |
| 10 | 777652 |
| 11 | 1005824 |
| 12 | 1263148 |
| 13 | 1549624 |
| 14 | 1865252 |
| 15 | 2210032 |
| 16 | 2583964 |
| 17 | 2987048 |
| 18 | 3419284 |
| 19 | 3880672 |
| 20 | 4371212 |
| 21 | 4890904 |
| 22 | 5439748 |
| 23 | 6017744 |
| 24 | 6624892 |
| 25 | 7261192 |
| 26 | 7926644 |
| 27 | 8621248 |
| 28 | 9345004 |
| 29 | 10097912 |
| 30 | 10879972 |
| 31 | 11691184 |